The diaries are pretty consistent on this weekend.
Friday evening, Michael and Elisabeth came over to Sandall Close fot dinner at 8:00 after work.
Janie and I went to the hygenist’s together at lunchtime the next day; I think Dentics in Kensington at that time.
Then I cooked dinner at mine for Janie and Andrea (and possibly Andrea’s then beau).
These are unconnected incidents: dinner-hygenist-dinner – I’m just reporting what the diaries say.