Since Wifi on the printer was not in use at this point, it was then possible to simultaneously connect an additional wireless PC when needed, directly to the printer using the printer's Wifi-Direct alternative.
Interestingly, the printer was connected to the USB socket of a Windows XP client, but I had also ended up adding some Windows 8, 10, & 11 PC's to the network through time.
IT was not optimistic since the new printers have no drivers for Windows XP, plus this was a discontinued model havng no drivers newer than Windows 8 either.
Windows 7 drivers worked fine for XP, Windows 8 drivers worked for Windows 10, so everything was good.
When Windows 11 came out, there was a notice on the Brother website advising that you would need to wait over 30 days before they would be posting compatible drivers.
When they did post the W11 drivers, they were the exact same files that had already been released for W10 years earlier. Apparently the factory only needed to confirm there were no show-stoppers when installed in W11, with no modification of the drivers needed.