I would like to bring my recumbent from Zürich to Basel by public transport. A direct connection would be preferable. But according to
https://sbb-tickets.cc/en/timetable/travel-advice/bicycles/take-your-bike-with-you.html
recumbents are only allowed on RE, S and R trains. However, unlike many recumbents, mine only has two wheels and is around 1.80 m long, so it usually fits regular bike spots in trains. Therefore I wonder if it would still be possible to bring it on a IR, IC, or ICE train.
If it is not possible to bring my bike on a direct connection, I wonder how I buy tickets for a connection with RE, IRE, and S trains ahead of time. I have a connection in mind which is not possible to book online.