It is safe to assume he didn't record the traffic because: 1: it is hard to do, 2: it is probably illegal depending on the network he would have needed to spy on, 3: he would have shared this bombshell evidence instead of the half-baked nonsense powerpoint slide.
Also, MAC address is not transmitted past the local network, so to have that information he would have needed to be in the room the voting machine at the time of the supposed contact, which apparently didn't happen.
“half-baked nonsense”
Ok, you and others here have me convince Biden won there was no Computer voting fraud. You win