BOAC
All three were caught by an apparently incompetent Lan Chile crew on the way to the div
That is not correct. According to the official IAA report and AVHerald reporting, FR-2054 landed
before LAN. There is no evidence from the official reports to suggest that any of the aircraft were affected by LAN "on the way to the div" as you suggest. In fact it was stated that the congestion was
at the diversion airport, caused in part by the number of Maydays in addition to the sheer number of diverting aircraft. Notwithstanding the fact that all operators were effected (some by LAN
and Ryanair), the only aircraft to declare Maydays were the four mentioned, three of whom were Ryanair aircraft. The latter, presumably, the reason questions were asked and this documentary commissioned.