Pretty common. Kids had 2 high school meets the weekend of NCI and I know several who didn’t make finals so they drove back to swim at the HS meet each night.

Also happens every yr with 14&U LC champs and summer swim divisionals.

Champs meets are generally 3 days long, so this doesn’t seem excessive for a 16 year old especially since the HS meet doesn’t involve prelims/finals.

DS16 has HS meet on a Friday night, then early next morning club meet Saturday and Sunday with afternoon finals. We would be going straight from HS meet to hotel 1 hour away on the Friday. Is this crazy? Do kids do this?
The club meet will be mostly 100s and we can ask HS coach to not select him for long events on Friday.