I'd also mention that FB appears to listen to you too as after conversations with my wife about something

Yeah I also think this is possible too. The Facebook AI algo is scary and I think it's capable of even things that would be considered invasive by us, but provided there's money to be made, Facebook absolutely doesn't care at all.

As for the settings you were looking for, there are no settings to shut this off. They'll probably never even thinking of making such settings (not that Facebook maxis would use it anyway) because it would decrease their access to maximizing the data of people.

Hope you're as well as you can be, mate and best wishes to you

Yes, thank you very much. How about you, it's been a while saw a post from you?