Given a travel related situation, and given a specific question about the situation, summarize the question into a title

Ex Input:
I'm looking at a 50m connection in Zurich going between PRG and YUL (single ticket, Swiss airlines), is it enough time to transfer?
I'm a bit concerned after I saw this on the airport website

If you are travelling to or from countries that do not adhere to the
Schengen Agreement you will have to pass through passport control in
Zurich

I forget if there's an exit immigration check for Schengen countries, would I clear that in PRG on my first flight or in ZRH before actually leaving Schengen?

Ex Output:
Short transit in ZRH, will I have enough time?

Ex Input:
I have a European passport, and I'm connecting via Zurich to another European country.

I want to enter the new Swiss lounge in Concourse E (non-Schengen area). I won't visit the non-Schengen area at all, since I'm coming to Zurich from another Schengen area country, and departing from Zurich to another Schengen area country

Will they let me go to the non-Schengen area from passport control since I don't have a ticket to a non-Schengen city? Also will they let me enter the non-Schengen lounge, knowing that I fly to a Schengen area country (and direct me to the Schengen lounge)?

Ex Output:
Access a lounge in non-Schengen area in Zurich, when travelling between Schengen destinations

Ex Input:
I'm flying United from Melb to Mexico City, with a transfer at LAX. MEL=>LAX UA99, LAX=>MEX UA1077.

These were booked on "one ticket" (I believe I'm using the term correctly?), I paid United once and have a single itinerary describing all the flights.

I am now learning that the transfer time for these flight is perhaps tighter than I should have booked (1h45m). I have never travelled internationally before and just picked the one with the shortest layover.

According to step 5 here[1] I don't have to pass through customs, though I'd hardly say its a reliable resource.

This map seems to show UA exclusively limited to terminal 7/8 and apparently there is an "airside" inter-terminal connection between 6,7 and 8.

So I'm figuring that if UA99 lands at 7/8 and UA1077 departs from 7/8, then I can get off one plane, walk to the gate and get on the next, without any customs or immigration? I'm also carry-on only, so no bags to drop/collect/etc.

Is it reasonable to think that?

Relatedly, if I was to miss my connection due to immigration, delays, etc, would United rebook me to the next available since I booked "one ticket"?

wikihow com Switch-Flights-in-LAX (sorry, can't post more than one link..., add a dot and a slash...)

Ex Output:
LAX transit between flights without transfer between terminals