Does anyone know the freaking married segment rules for itineraries involving OW partners?

I am literally agitated with AA agents saying they can only search A to C even though A to B is on a OW airline & B to C is on AA.

In this case, A to B is on LATAM & B to C is in AA metal.

Agents are seriously driving me nuts with their made up rules.

i can search for & agents can see A to B.

I can search for & agents can see B to C.

but I was told twice today they can’t book A to C