I remembered that a lot of this had been discussed months ago, and someone even found detailed flight schedules (if I remembered who, I would give credit.) Exactly right they had Comet 4s and page 93 even
mentions the schedule: “twice weekly London-Nairobi flights” as of Jan 12 1960, with increased flights starting Jan 1962. Daily flights were started May 1962. We figured a flight time, assuming perfect connections - which I have to say would be extremely unlikely - of at least 36 hours.
36 hours of flights and connections isn’t too long in my books. If it took them up to a week in 1961 no big deal. Hell, I waited 2 days in a layover in 2001 for a jet to be fixed in Italy, and stayed in the airport while I waited.