If it was indeed for Wi-Fi then wireless LAN would not work for one or the other freq,'s

I too broke the ZIF connector beyond repair. Hopefully its only related to the speaker on that side.

Has to be a better way...the snap in plug was being stubborn. The plug seat broke away from the circuit board. Now I only have the male and female ends and no way to easily solder back to the board.

iFixit should show the closeups of the edges of the chassis, after the screen has been removed showing where the glue needed to be cut and the proximity to other internal parts so the repair tech can anticipate what they can't see and avoid being too aggressive. Show the difference between a clean removal vs one that was problematic in breaking the seals around the edges.

Make sure "Insert a playing card" or "similar object" is "non-conductive" in nature and materials

Why begin reassemble directions or reminders when the battery has not even been removed yet? This advice would be better suited just after the battery install and just after powering on to test. Might have to inject multiple "test" points before and after reassembly.