This is about advance schedule changes, not IROPS.

I was notified of a schedule change of more than 2 hours but less than 4 hours (longer connection resulting in later arrival). Domestic AA flights, regular economy, no codeshares, ticketed through an agent (Amex Travel).

The best option close to my original time is a co-terminal destination, per the co-terminal list in the AA schedule change agency reference. That document, however, is unclear on whether I qualify for this change. Amex Travel told me no, but now, having looked at the document, I wonder if it is worth trying again.

The document lists "May offer co-terminals for AA Prime flights only if the flight times are closer to the original schedule" under the section "Schedule Change is greater than 4 hours (241+ minutes)" but does not include this language under the section "Schedule Change is 4 hours or less". Case closed, I can't use a co-terminal with a change under 4 hours, right?

But... under the separate section "Basic Economy", it says:
My flights are not BE, but surely should have at least as much protection as BE, and it doesn't say co-terminals require a change over 4 hours for BE.

And, under the separate heading "Co-Terminals/Multiple Airport Cities - AA Prime Flight Only", it says:
There is no mention here of a 4 hour requirement.

As a comparison, under another heading "300 Mile Radius" immediately preceding this one, it says:
This is to illustrate that the absence of a 4 hour requirement in the co-terminal rule is meaningful.

So, I consider the document quite confusing on my situation. What is the correct interpretation in practice?