. . . above stated post that, first #4, then #1, #2and #3 (partially) . . .would that not suggest some type of contamination, be it fuel, birds, . . .or whatever.
They are now saying that only the outboard engines had failed (in succession), and just after VR.
If so, could a departure (high thrust demand) with the outboard fuel boost pumps mistakenly placed / left in the "off" position also cause this? . . . I know of like example bonehead configuration mistakes that have inadvertently occurred at times before, but then at a lower, more normal field elevation (better fuel head pressure) and with no results. . . . but engine starvation if departing from a higher elavation runway (8600ft)?
Outboard boost pumps off / inboard boost pumps on / crossfeeds open, is a standard configuration that is commonly used during / after climb (for keeping fuel weight in the wingtips until it's usage is required).
No suggestions . . . just academically exploring diverse ideas as to a double outboard failure.