The Orion Project's Twitter feed (at Johnson Space Center) posted a picture of Noah on June 22, 2019, approximately four days before the Tonight Show clip aired. He was on tour and had a show in Houston that evening. He also was in Fayetteville, Arkansas for another show the previous evening, so it seems likely that his visit was actually on the 22nd and not prior.
At the time, Expedition 59 was on board, and it was comprised of six astronauts:
- Oleg Kononenko, commander (RUS)
- David Saint-Jacques (CAN)
- Anne McClain (USA)
- Aleksey Ovchinin (RUS)
- Nick Hague (USA)
- Christina Koch (USA)
Since Noah is something of an American cultural figure but is less known outside of North American, I would guess that it's more likely that Noah spoke with one or more of the American astronauts, a bit less likely that he spoke with Saint-Jacques, and rather less likely that he spoke with either of the Russian astronauts. But that's really just a guess on my part.