Thank you, Tony. That works great! Here's how my function ended up looking...
=NETWORKDAYS(D9,F9,Holidays)-IF(NETWORKDAYS(D9,D9,Holidays)=0,1,MOD(D9,1))-IF(NETWORKDAYS(F9,F9,Holidays)=0,0,(1-MOD(F9,1)))
I used a custom format for the cells--> [h]:mm
Julia
Thanks to John, too! You have both...