Hi Martin
Not at all unrealistic; in fact it takes much less time than that. Take the catheter out and make it ready to use say 30 sec, insert it say 15 secs, empty bladder as normal, remove catheter say 15 secs, and make it ready for disposal another 15 secs. So say a minimum of say 1.5 mins over and above the time to actually empty the bladder.
But do practice this a couple of times at home so that you know what to do and what to expect when on the plane.
Andrew
2 months 4 days ago