I thought the ending was the televisual equivalent of when you're writing a story at primary school and run out of time so just put 'and then I woke up and it was all a dream'. So many unresolved threads. I feel like the writers didn't know how to wrap it up and just thought of a cop-out.
I thought at the end that Faith looked down the camera - a la last episode of Fleabag, which I took to mean that it was the last series. Not sure how it could get any more bonkers and confusing anyway.
Oh and I hadn't realised I was watching the last episode until the secretary got together with Tom - and then I realised they were tying up loose ends. Really clumsy and clichéd.