I've seen the wing window leaks on these trucks before, no evidence of that on this one. I haven't tried to open them up yet.
Wetness is way forward of that. And where the entry point appears to be, it's a ways away from the wipers and such. Like I said it starts in the very driver side corner of the firewall, way back in there. And drips down from there to puddle. Below the dimmer switch, and just inboard of the threshold.