Thanks, glad I asked. I saw the black/white connection but couldn’t trace it.
You’re probably correct regarding the 2-wires, one being line and one being load. The next step will be to determine which is which.
Separate the wire-nutted black/whites so that you can test the disconnected black conductors. Using a meter, test between a single black conductor and the bundled whites that belong to the two 2-wires (you can leave them bundled, just remove the wire nut).
Also, take a look at the two 3-wire switches and confirm that the white conductors are connected to the common/black screws.