Clock in multiple punch in/punch out times Formula

Good Morning All!

I have a data dump of when people have entered in times for when they worked. I need to be able to calculate their total time they worked but running into a problem with people that work over night and those that enter in times that overlap.

An example:

John A. Time in: 12:00 AM Time out: 7:00 AM
John A. Time in: 4:00 AM Time out: 7:00 AM
John A Time in: 7:00PM Time out: 11:59 PM

The total time should be 12 hours but the formula using max/min is giving 23:59 hours/minutes. How would I create a formula so it will calculate the right time? Second, how do I get the formula to not duplicate overlap time? I am getting with the first two rows a total of 10 hours instead of 7 hours because it double counts.

I am a complete novice to formulas so I apologize in advance to my own ignorance.

Sincerely,

John