PageSpeed Insights network dependency tree shows unrelated Vimeo and LEGO-associated requests

### FAQ

- [x] Yes, my issue is not about [variability](https://github.com/GoogleChrome/lighthouse/blob/main/docs/variability.md) or [throttling](https://github.com/GoogleChrome/lighthouse/blob/main/docs/throttling.md).
- [x] Yes, my issue is not about a specific accessibility audit (file with [axe-core](https://github.com/dequelabs/axe-core) instead).
- [x] Yes, my issue is not answered by [other FAQs](https://github.com/GoogleChrome/lighthouse#faq).

### URL

https://neoschronos.com/insights/europes-venture-capital-gap/

### What happened?

PageSpeed Insights reports unexpected third-party requests in the Network dependency tree for our page:

[Europe’s Venture-Capital Gap: What Founders Should Do Differently Before Their Next Round.](https://neoschronos.com/insights/europes-venture-capital-gap/)

We do not use or integrate with Vimeo, New Relic, or LEGO on this site. Two tests of the same page show different, apparently unrelated dependencies.

**Example 1: Desktop — Vimeo requests**

[Desktop Report](https://pagespeed.web.dev/analysis/https-neoschronos-com-insights-europes-venture-capital-gap/mjnhhk27ix?form_factor=desktop)

The Network dependency tree reports a maximum critical path latency of **2,510 ms**, with repeated requests to:

```
https://player.vimeo.com/video/828667412/outro?on_site=0&type=videos&h=7ed36aa4b3
https://vimeo.com/flarepoint/xzIvchbJ
```

All these entries show **0.00 KiB**. Our page contains no Vimeo embed, and a search of our website repository found no Vimeo references.

**Example 2: Mobile — requests referencing LEGO**

[Mobile Report](https://pagespeed.web.dev/analysis/https-neoschronos-com-insights-europes-venture-capital-gap/ea5w6i3fuy?form_factor=mobile)

The Network dependency tree reports a maximum critical path latency of **169 ms**, with requests to:

```
https://bam.nr-data.net/jserrors/1/df07c5d304
https://bam.nr-data.net/events/1/df07c5d304
https://bam.nr-data.net/ins/1/df07c5d304
```

Each request includes the following query parameter:

`ref=https://www.lego.com/en-nl`

All three entries show **0.00 KiB**. We do not use these services or connect to LEGO.

### What did you expect?

The Network dependency tree should contain only requests belonging to the audited page and its actual dependencies.

### What have you tried?

1. We have scanned our full repository for occurrences of the mentioned dependencies and confirmed they do not exist.
2. we have run Lighthouse 13.4.1 on Chrome Version 152.0.7977.76 where the reported error does not appear.

### How were you running Lighthouse?

PageSpeed Insights

### Lighthouse Version

13.4.1

### Chrome Version

Version 152.0.7977.76

### Node Version

_No response_

### OS

MacOS Tahoe 26.6.2

### Relevant log output

```sh
Network dependency tree
Avoid chaining critical requests by reducing the length of chains, reducing the download size of resources, or deferring the download of unnecessary resources to improve page load.LCPUnscored
Maximum critical path latency: 2,510 ms
Initial Navigation
/insights/europes-venture-capital-gap/(neoschronos.com)
- 92 ms, 12.72 KiB
…828…/outro?on_site=0&type=videos&h=7ed36aa4b3(player.vimeo.com)
- 187 ms, 0.00 KiB
/flarepoint/xzIvchbJ(vimeo.com)
- 507 ms, 0.00 KiB
/flarepoint/xzIvchbJ(vimeo.com)
- 772 ms, 0.00 KiB
…828…/outro?on_site=0&type=videos&h=7ed36aa4b3(player.vimeo.com)
- 793 ms, 0.00 KiB
…828…/outro?on_site=0&type=videos&h=7ed36aa4b3(player.vimeo.com)
- 1,033 ms, 0.00 KiB
…828…/outro?on_site=0&type=videos&h=7ed36aa4b3(player.vimeo.com)
- 1,186 ms, 0.00 KiB
…828…/outro?on_site=0&type=videos&h=7ed36aa4b3(player.vimeo.com)
- 1,489 ms, 0.00 KiB
…828…/outro?on_site=0&type=videos&h=7ed36aa4b3(player.vimeo.com)
- 2,102 ms, 0.00 KiB
…828…/outro?on_site=0&type=videos&h=7ed36aa4b3(player.vimeo.com)
- 2,352 ms, 0.00 KiB
…828…/outro?on_site=0&type=videos&h=7ed36aa4b3(player.vimeo.com)
- 2,510 ms, 0.00 KiB

-----

Network dependency tree
Avoid chaining critical requests by reducing the length of chains, reducing the download size of resources, or deferring the download of unnecessary resources to improve page load.LCPUnscored
Maximum critical path latency: 169 ms
Initial Navigation
/insights/europes-venture-capital-gap/(neoschronos.com)
- 101 ms, 12.72 KiB
…1/df07c5d304?a=…(bam.nr-data.net)
- 168 ms, 0.00 KiB
…1/df07c5d304?a=…(bam.nr-data.net)
- 168 ms, 0.00 KiB
…1/df07c5d304?a=…(bam.nr-data.net)
- 169 ms, 0.00 KiB
```

Start by reproducing the linked desktop and mobile PageSpeed Insights reports for the supplied URL, then compare them with a local Lighthouse 13.4.1 run in Chrome 152. Trace how the Network dependency tree receives and displays the zero-byte Vimeo and New Relic requests. Done means unrelated third-party requests no longer appear in the audited page's dependency tree.

Written by the indexing model from the issue text.