I have a two-switch box (2 gang?). One switch (right switch in pictures) is a 3-way switch that controls an overhead light, while the other is a smart switch (left switch in pictures) added by the previous homeowner to control the external lights. A recent power failure has reset the smart switch to a state where it is no longer functional. I'm attempting to replace the switch with a "dumb" switch, but am surprised by the wiring. The smart switch has a neutral, load, and line. The load seems to be coming from the other switch in the box.
I'm trying to understand the current state of the wiring so that I might properly replace the switch. I've attached some hopefully ok-ish quality photos of what I've seen behind the plate. Please let me know if there are more specifics that would make this clearer.