I don't have hard evidence or information, but I do have a bit of anecdotal information for you.
I just did this a few weeks ago. Had an APA sit for at least a month (I think, I will check my notes but I just got to work) and pitched an 1.108 OG stout onto it. I did pitch the same day I racked the APA out of the bucket. Fermentation was very fast even though I cooled the stout below its fermentation temp range and barely hit the bottom if the acceptable range. Use a blowoff tube. I didn't end up needing one, but I saw a video from a guy on here who did a time lapse video and it was in the blowoff tube in around 2 hours, if I remember correctly.