Originally Posted by
cfischer
all of the above. Was able to select upon booking, was able to change on the web and the app. No issue whatsoever.
Lovely.
From my this year experience since January:
UA app "offering" the check in of an LX flight booked through the UA app:
The same flight on SWISS.com ::
an earlier segment on LX (booed via united.com) upon airport check -in with UA:
Smooth and brilliant IT integration

.