MLB Rules Quiz and article

[bob jenkins]

if it's not the last inning, then "play" (or "the game") is still going on. R1 and R2 will advance on a walk. If for some reason, they don't, then, yes, get an out on appeal and cancel the run.

If it's the last inning, then R1 and R2 "don't mean anything", so under OBR (and NCAA, but not under FED), there's no need for them to advance (on a walk) to have the winning run score.