Train A and Train B are traveling towards each other from stations P and Q respectively. Train A departs from station P at 9:45 AM with a speed of 54 ...

Train A and Train B are traveling towards each other from stations P and Q respectively. Train A departs from station P at 9:45 AM with a speed of 54 km/h. After half an hour, Train B leaves station Q at a speed of 66 km/h. The distance between stations P and Q is $x$ km, and both trains meet at 2:35 PM on the same day.

Calculate the difference between:

1. The original time taken by both trains to meet as per the given conditions.
2. The time taken by Train B to catch Train A if Train A had started in the same direction as Train B, with Train B starting 2 hours after Train A.

What is the difference in time (in hours and minutes)?