The way to check is to upload a Zwift log file to trainerdx.com
It won’t tell you if the problem was on the PC side or the device you were connecting or something in the air between the two of them, but it will tell you if disconnections happened
When PCs have Bluetooth problems, an inexpensive way to test that is to get a TP-Link UB500 adapters and disable any other Bluetooth adapter in the PC before installing it. I’ve shared the tips for this a few times but here’s one… Avanti drop outs - #26 by Paul_Southworth