As I mentioned a month or so ago on here, the Saturday late is still the BBC News at Ten/BBC Weekend News (just the same as Sunday) the only differences being the titles, as the Sat late is more often then not actually on the hour (except recently). The other main difference is of course they don’t hand to N + R at the end. Otherwise the programme is produced and presented by the same team as in the week and on Sunday.
FYI I read about this in a pdf file published quite recently (2019 I think) somewhere online. Worth trying to find if you’re interested.
I understand your logic, but this simply isn't the case. Saturday late is produced by 6 and 10, however branded as "BBC Weekend News". Same with the lunchtime news, it's branded "BBC Weekend News". It's a different length, format, presenters and often time. I'm having an on-going dispute with somebody on wikipedia about this who seems to think that Saturday is branded "BBC News at Ten" - when it used (most of the time) generic titles, and on the EPG is labelled "BBC Weekend News".
Oh Wikipedia is simply a load of nonsense and, as many others have come to realise, it’s impossible to edit it without full hard proof.
I’ll find the document where I read about this though^
Also worth noting that Sat Late appears as all sorts of different names on EPGs, often just as "BBC News" in fact.