Thanks yet again, Tim.
The schedule files can be got readily enough through the front end that has been provided. It’s more a question of whether you can see a clue that a file you have previously downloaded is no longer up-to-date. In the case of the schedules, the listing makes it pretty cleer that the majority of files are recreated every week so unless the file size is different to the nearest Kb it would not help!
It would however help with spider maps, which I do not think are recreated regularly. Also with the Datastore mass bus timetable download perhaps; you have to download over 100Mb to find out whether you actually needed to!