A-ha! Rewatching the documentaries on the disc I have realised something I had long since forgotten about TMP.
When they started making the film...........they had no third act yet. This may explain a few things.
'If the Apocalypse starts, beep me!' - Buffy Summers
'The sky's the limit.....' Jean-Luc Picard, 'All Good Things'
courtesy of Saquist