Sorry, this is going to be another meta question about these two:
(Full disclosure: I am biased, I currently have the accepted answer on the former)
The way I see it the latter question is asking about a theoretical situation (It even opens with "Yes, this is a question from the movies"). Even though the title uses the word "realistically", I don't believe anyone realistically believes a layman could fly a jet liner.
The former question is asking for practical, realistic things an inexperienced, but enthusiastic* person could do in an emergency situation.
It saddens me that the former question is very close to be closed as a dupe of the latter. I would much rather see good, practical information on this site than whimsical, movie-related, thought experiments.
What are your thoughts?
* has some experience on a sim, has flown in a GA aircraft a few times, understands some practicalities of flight