Did four years pass in show time between series 1 and series 2?
This is maybe too literal-minded, but it occurred to me after watching the full series for the first time on BritBox - I wondered if the actual four-year gap between the two series is meant to have taken place for the characters. It seems hard to imagine Polly and Manuel enduring their jobs (and for Manuel that is a two-way street - he has to endure Basil and Basil has to endure him) for four years.
It was interesting that the very last episode seemed to be the only one with clear time markers. First a mention of strikes (endemic in Britain and winter 1978/79, but a problem in previous years also) and then a completely unambiguous mention of Annie Hall (released 1977).
There probably is no right answer, but I wondered if longtime fans had ever thought about this.