vrecord only able to see one DV device - Ubuntu

I'm running Ubuntu 22.04.4 LTS and would like to use vrecord to capture from multiple DV decks at the same time. However, the application only sees one DV device when I have multiple devices connected to the system.

I've tried different combinations of devices without any luck: HVR-1500As, DSR-1500As, and DSR-40s.

I currently have two HVR-1500As connected:

`vrecord01@vrecord01:~$ grep . /sys/bus/firewire/devices/fw*/*_name
/sys/bus/firewire/devices/fw0.0/model_name:DV-VCR
/sys/bus/firewire/devices/fw0/model_name:HVR-1500
/sys/bus/firewire/devices/fw0/vendor_name:Sony
/sys/bus/firewire/devices/fw1/model_name:Juju
/sys/bus/firewire/devices/fw1/vendor_name:Linux Firewire
/sys/bus/firewire/devices/fw2/model_name:Juju
/sys/bus/firewire/devices/fw2/vendor_name:Linux Firewire
/sys/bus/firewire/devices/fw3.0/model_name:DV-VCR
/sys/bus/firewire/devices/fw3/model_name:HVR-1500
/sys/bus/firewire/devices/fw3/vendor_name:Sony
`

But dvrescue only sees one:

`vrecord01@vrecord01:~$ dvrescue -list_devices
0x8004602012c0faf: Sony HVR-1500 [DV]
`

Version info:
`vrecord01@vrecord01:~$ dvrescue --version
DVRescue v.24.07 (MediaInfoLib v.24.06) by MIPoPS.
`

Is this possible? If so, please let me know if you need any additional info.