I have a ticket which is like this (Basel - Bern), which is valid for some time frame:
When I check the timetable for example on a given day between 18:00 and 19:00 I see 5 trains from Basel SBB to Bern:
18:01 S 3 Direction Olten
18:03 IR 26 Direction BEllinzona
18:16 IR 27 Direction Luzern
18:28 IC 61 Direction Interlaken Ost
18:56 IC 6 Direction Brig
The bolded ones have this change of trains at Olten (like my ticket specifies).
Question is: Is my ticket valid only for those train with obligatory change at Olten, or I am permitted to take whatever train from Basel SBB to Bern.