can it be that samples with the same metrics + time stamp are being dropped?

I was testing some concurrency inserting such lines, and composing the graphing query I noticed that the amount of samples I send were not the same as being reported by the query. I thought maybe the interface of influx could be configured to drop samples. But does not seem to be it. When I decided to not send s but ns, more samples were received, so it is not the configuration.

Is this by design that such samples are dropped?

[1]
1665856411000000000 test3 201 connect upload 0.005

[2]
1665857149865079663 test3 201 connect upload 0.005

influxdb-1.8.10

Begin by reproducing the concurrent inserts against InfluxDB 1.8.10 using the two provided line examples, then compare the submitted count with the graphing query result. Determine whether samples sharing metrics and timestamps are intentionally overwritten or dropped, and document the confirmed behavior and relevant configuration or query conditions.

Written by the indexing model from the issue text.