It looks like Kroll and Mulaney made sure to make every single square inch of their Broadway run funny.
In the programs for Oh, Hello on Broadway, both John Slattery and Jon Hamm are actually listed in the programs as the understudies for Gil Faizon and George St. Geegland played by Nick Kroll and John Mulaney respectively. Leave it to Kroll and Mulaney to find some “suitable” understudies.
Slattery and Hamm have yet to really step in for a night of Oh, Hello. Also, it’s hard to imagine anyone inhabiting the roles of Gil and George, but imagining Slattery and Hamm doing Too Much Tuna is pretty adorable.