Unlikely that a COP failure would stop the engine and keep it from starting again. That has been pointed out earlier in the conversation, more than once.
OP did not have a COP fail, from what we can read here.
There is a remote possibility that the failed coil blew the ignition/injector fuse.
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It appears weāll know soon enough, provided OP keeps us informed. Iād guess a single coil failure could cause intermittent fails to start. Especially cold starts w/a 4 cylinder engine.
And l would guess that your diagnosis is wrong
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