In need of an excel formula to calculate the diff in times but only between specific times

Good morning everyone, I'm looking for a formula that will calculate the difference in times between specific times while working with a 24 hr clock. Please see details below:

E3 provides the start time of 4:00
H3 provides an end time of 15:30

If an employee works betwen the hours of 0:00 (midnight) to 5:59, this is considered DIFF hours and is therefore the number I am seaking. So for the data noted above, the total DIFF hours worked is 2 hours.

Thank you in advance for your time!

Thank you so much for the quick reply! The only issue is that if the statement is false (if the employee began work at 6:00 and ended at 14:00) I would like the total to be "0" - Would I add this in the formula as noted below?

=IF(AND(H3<TIME(6,0,0),E3>TIME(0,0,0),E3<H3),H3-E3,IF(E3<TIME(6,0,0),TIME(6,0,0)-E3,IF(H3>TIME(0,0,0),H3-TIME(0,0,0),"0")))

Thank you so much! One last question (I promise). If cell E3 or H3 have no data, the most recent formula gives a total of 6:00.. is there a way to fix this to show 0?

That's EXACTLY what I needed! Thank you sooo much