3 Conditional Formatting - 3rd one not working ?

Here is what I have ...

I have 3 CF's in Column G:

=AI577>14 turn cell red

=AI577=0 no color

=AL577>14 turn cell red


Cell AL577 is populated but the following IF Statement:

=IF(G577="",$AK$1-E577,0)

For the purpose of testing ...

G577 is blank
AK1 has a date of 12/06/19
E577 has a date of 12/06/04
So AL577 is 15

Cell G577 is not turning red ?

The first 2 CF work ... the 3rd not so much?

Thoughts?