Wait, 11 days though? I have to ask, were you really out there every single day on this one sink, or did it just sit for a while between visits? Because snaking twice, swapping the trap, and running a camera sounds like maybe two or three trips, not 11 days of actual work. I'm not trying to bust your chops, but "11 days of my life" reads more like the calendar time it took than the hours you actually put in. A $3 flapper that got missed in a shared standpipe is annoying for sure, but that's also just how plumbing goes sometimes, the small stuff hides behind the big stuff. The part being cheap doesn't mean the search was dumb, it means you were working through the list like anybody would.

Those "unmarked antennas aimed at the port" thing is popping up everywhere now, I saw the same setup near the grain silos by my house and a guy at the hardware store said his cousin noticed it too. Feels like every rail yard in the country got wired up this year.