We plan to visit Oxford on a daytrip from Bath and have booked the extended tour
https://footprints-tours.com/oxford/tours/oxford-walking-tours/oxford-university-and-city-walking-tour-entering-christ-church/.
This is a 3 hour tour starting at 2 pm. We arrive by train around 11:15 am, which gives us about 1.5 hours to have a quick lunch and may be see something that this tour does not cover. Would have another hour after the tour for any remaining sightseeing (return train at 7 pm).
For those who know about this tour, we are looking for suggestions for these two roughly one hour timeslots. Our interest in Oxford is mainly about appreciating its contribution in education, great personalities (Einestein's board (History of Science Museum), as an example) appreciate architecture, any good views - (although wife may not climb the 100 stairs of some buildings that RS recommends).