Why now? I don't get it. The original plan for an early start was Thursday if both conference finals were sweeps. If it was Thursday, they couldn't have gone Thurs/Sat/Sun. So why the big rush to play Sunday? I don't know.
And 1955? Believe it or not, the back-to-back dates were between Game 4 and 5. So Game 4 was in Montreal on April 9. Game 5 in Detroit on April 10.