Ohhh, I think I understand now, they can’t connect to jellyfin because that computer has the VPN on. I thought their question was turning on a VPN to connect to Jellyfin outside their house.
Then yea split tunneling would be a good solution. Set up so only the torrent application uses the VPN. Or that Jellyfin is excluded from the tunnel.
Unfortunately I’m not too up to date on VPNs and which offer that. Perhaps their network equipment could apply the VPN to only the torrent traffic, and then they match the port number used inside the torrent application’s settings?
Don’t get too crazy into categorizing your media. Keep it simple with your folders, so Jellyfin can know what the file is then scrape the internet for meta-data.
Media -> Movies -> Example Movie (year) -> Example.movie.file
Media -> Shows -> Example Show (year) -> Season 1 -> Example.show.S01E01.file
Ideally your media downloads will have the name and release year in the folder name already. It knows to ignore or match things like x264, DD.5.1, and release group name.