Teams are 4-1 post Ireland matchup since 2022. (NW had a bye the following week) Stats don’t exactly indicate that it is as major of a factor as you’d think.
Keep in mind that they were in and out of there in roughly 72 hours. Little easier to adjust back to US time the less time you spend overseas.
I think people forget a team like UCLA now has to play at Rutgers which is about a 5.5-6 hour flight and 2500 miles.
The charter flight from Des Moines to Dublin was about 7.5 hours and 3900 miles. Definitely further but not like it's in a different world.