(e.g. Galashiels on the Borders Railway).
Here is an interesting fact. The rail/bus integrated fares to/from the non rail served Borders towns have very recently been quietly dropped. The towns themselves remain in the system but there are no longer any through fares or timetable information.
The reason: seemingly they were made redundant when the railway reopened. Why? Because the railhead interchange remained at Edinburgh and was not moved to Galashiels or Tweedbonk as required.
It was theoretically possible to purchase a ticket from Gala to Hawick. That was priced at the rail fare from Gala to Edinburgh PLUS the bus add on from Edinburgh to Hawick. Absolute bonkers.
There may still be some some legacy through fares to places served by the historic permanent rail replacement buses on the X60, X62, & X95 routes. Many of these through fares were available with priv or railcard discounts. The last time I checked there were Advance 1st fares from Edinburgh to Hawick via Carlisle priced by TPE.