Hours Between the Days

I need to calculate the Total hours an Incident/Ticket been live in system. I have incident login date/time & incident closed date/time.
Working days are : Saturday to Thursday (Friday is OFF day)
Working Hours are : 7AM to 6PM

I tried the NETWORKDAYS formula in array, but the formula by default uses Saturday/Sunday as weekends & hence my answer is wrong.
Can some Expert help me to fix this

Have added my worksheet in attachment.
Expert please advise.

Thanks in Advance.

NETWORKDAYS.INTL uses a complementary switch (16 in your case) for week ends different from sat/sun . If shifts always end e between start and end hours try

=(NETWORKDAYS.INTL(C2;D2;16)-1)*("18:00"-"07:00")+MOD(D2;1)-MOD(C2;1) - replace semi colons with commas if necessary

See https://support.office.com/en-us/article/networkdays-intl-function-a9b26239-4f20-46a1-9ab8-4e925bfd5e28

Thanks For the Quick Response. The amendment in the Formula worked.
Will Explore More on the new Learning
Thanks Once again.

Hi.
The above formula only works if the ticket is closed next working day. If the ticket is aged for say 4 days, the formula gives incorrect output.
Can you please advise.