Bringing this topic back up, as I am confused as well.

My spouse is booked CVG to LAS in F, Seat 5B - Flight 701. Delta states this flight is a Boeing 757. The Delta seating chart shows no Row 6 behind Row 5, A/B. There is a last row on the other side - Row 6, Seats C & D. Same for the seating chart on the return. So is Delta's seating chart correct?

Also, where is the exit on this plane at arrival -- in front of Row 1, A & B in F or in front of Row 19 in Coach? Not even sure about a "Row 19" - it is labeled but this row is shown as void of seats.