....
1. Would I also receive $143.70 if my friend booked the ticket using my name as the traveler and paying for it with my credit card (93.70) and using her $50 travel credit? ...
yes
....2. Assuming I receive the $143.70 as an FFC and I have another $25 travel bank credit, could I combine both to purchase a ticket for $168.70. ,,,
Not easily. The TB credit would need to be converted to an FFC to combine. To get that credit you would need to use the TB credit to purchase airfare ($50-$70 are the cheapest) wait at least24 hours and then cancel
....3. If I understand you correctly, if my FFC expires on July 6, 2024, and don't have a future travel plan, I can purchase a ticket on July 5, 2024 using my FFC and then cancel within 24 hours and my new FFC would expire on July 5, 2025? Is this correct? ...
Maybe, under present rules,
However, this is probably not want UA prefers and UA could change the rules preventing this extension. Best not to rely on that ability.