My mantra is never beside a vehicle at an intersection, but once I'm in an intersection past the part where right turns are feasible I don't worry about it as much. Dando had entered the intersection approach where right turns are prohibited if I read him right, in a lane to the left of a right turn only lane.

If I'm shooting through using the right-only lane I'm very conscious of letting a car drive beside me, but sharing a through only lane not so much. I could have been caught by surprise just like Dando, even though objectively the two situations are similar. It's good to keep this in mind now.