Yes - I noticed this, or what I assume is related (and overheard a conversation between passengers about it too).
I found it very hard to describe what was going on though. What was happening (for me) was that searching for
BRI» - BOA times on nationalrail.co.uk -
NRE‡ gave one an hour yesterday. Same when searching BRI -
BTH» . Whereas the timetables,
FGW▸ website (and NRE last week) gave the full range - 7 between 1600 and 1800 inclusive.
Seems to be what I would expect today when having a look. [Although the service that did appear yesterday (1752 BRI-BTH) is not shown for going on to BOA as the next train connects with the same bus.]
If you followed that - well done!