We have a parish councilor that has not attended any council meeting for over 6 months. The council did not approve the absence and neither of the exceptions detailed in section 85 apply. A clear cut case for disqualification? No! according to the district council monitoring officer, because there was an intervening uncontested election, the clock was reset and as the councilor attended a meeting within 6 months of the election, section 85 did not apply.
So - it is possible for a parish councilor returned unopposed to be absent from council meetings for almost a year (6 months before and 6 months after an election). It also seems that a new councilor does not need to turn up for their first meeting for up to 6 months.
BTW the monitoring officer confirmed that even if section 85 applied it was not in his remit to intevene.