COLUMN A,B, & C include date and time related to "time when part was shipped"

Column A: Date entered as 07/15/2017
Column B: Time Entered as 60700
Column C: is converting time with this formula =TEXT(J18,"00\:00\:00")+0 (giving me result as expected 6:07:00)

COLUMN D, E & F related to when part was received/delivered

Column d: Date entered as 07/16/2017
Column e: Time Entered as 61000
Column F: is converting time with this formula =TEXT(J18,"00\:00\:00")+0 (giving me result as expected 6:10:00)

Now in COLUMN G: I need a formula that give me total time it took to deliver. For example 1 day and 3 minutes or 24 hours and 3 minutes. It don't matter which time format. hh:mm:SS or day:HR:MM etc