With the proviso that we have no facts about the actual cockpit duties and interactions yet, the authority gradient issue assumption implies that that the Captain was at the controls and the F/O did not intervene. There is of course a very simple way to eliminate this situation.... have the F/O set up and fly the approach under the Captain's supervision, prior to the Captain confirming the landing, whether automatic or manual. As a broad generalisation, I suspect Captains are less likely to allow F/Os to kill them than vice versa.......
Leads hobby-horse back into stable ....
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