The 707/VC10 swap for cabin crew in Syd was late sixties, early seventies. I did this RTW twice as pax.
707, LHR, FRA, TLV, THR, (try doing that now) BOM, SIN, PER, SYD, then VC10, SYD, NAN, HNL, LAX, JFK, LHR. 21 day's altogether.
QF start their PER, LHR non stop in a couple of months, how things have changed.