... Sully as an introspective pilot who couldn’t help relieving those 208 seconds.
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“Relieving”? I suspect the writer means “reliving”.
Proofreading really is a good practice.
I am sure he did mean “reliving” and you are right proofreading is a good practice, but he was probably in a hurry and since relieving and reliving are actual words the spellchecker did not catch it.