I was looking at the XC timetable book earlier today. On Sundays, from 18 September to 23 October, there were rail replacement buses running between Bristol Temple Meads and Bristol Parkway. But the XC Timetable book had a number of services running between Bristol Temple Meads and the North. For example: 0831 dep Bristol Temple Meads, next stop Gloucester 1001 2150 dep Cheltenham, next stop Bristol Temple Meads 2320. What route did these take?