The usual for me was four two hour slots each week back in Sixth Form...
Yr12 I used to have one two hour French, with a 45 minute Mandarin less straight after. And since it was at another school, it ran through half of my lunch. Then I'd have 15-30 mins for lunch followed by another double hour lesson of English Lit.
For someone like me who can't stand routine, it was HELL. Though we once had this French event with schools from around the local area and that was a few hours of making us jump through hoops too high for our level then.
Like we only had GCSE French backed with a month of A-Level lessons, and they stuck us individually in a room to answer cultural questions without any prep. Hellllooo, GCSE French taught us talk about what we like and how to ask questions, what do you think we can say at that point?
It was very awkward; esp. being a teacher that I didn't even know. Though he was quite handsome, but that's something else. So much silence and "umms" and "errs".