Given the mechanical saftey built into those switches, Unfortunately I guess that leaves us with two reasonable possibilities:
A) One of the pilots was somehow mistaken on the function of those switches and toggled them when they should not have. Then they genuinely thought they hadn’t when asked why they had cutoff fuel.
Or
B) One of the pilots chose to cut off fuel supply to both engines, intentionally bringing down the plane. They then lied to the other pilot when asked why they’d cutoff fuel.
Given the mechanical saftey built into those switches, Unfortunately I guess that leaves us with two reasonable possibilities:
A) One of the pilots was somehow mistaken on the function of those switches and toggled them when they should not have. Then they genuinely thought they hadn’t when asked why they had cutoff fuel.
Or
B) One of the pilots chose to cut off fuel supply to both engines, intentionally bringing down the plane. They then lied to the other pilot when asked why they’d cutoff fuel.