My train is cancelled but replace by a train with the same timetable but a different number; identical to the scenario in this question.
Under those circumstances, does the Sparpreis ticket have Zugbindung or not? Normally, with a Sparpreis, the ticket is only valid for the indicated train. This requirement is lifted when the train is ≥20 minutes delayed or cancelled. Is the requirement still lifted when a replacement train with the same timetable is available? Must I travel on the replacement train, or can I now also travel on a train departing at a different time?
Reasons to want to do this could be: other time more convenient, seat reservations possible unavailable, replacement stock may be shorter thus busier, or others.