After merging the vertices it seems the planks aren’t separated anymore so the bevel still doesn’t work as expected.
I’m having trouble separating them at this point because it’s much harder to do so now that the planks are 3D than it was before they were extruded. Manually selecting most of the faces is possible though tedious, but what about the top and bottom ones for each plank? Even if I hide the adjacent planks (also tedious), the merge vertices operation seems to have made it so that each adjacent plank shares the same single face between them.
