Hi there,
I doubt that it'll work, as AAM DIL has a hard dependency on ECID now and if the Adobe Org IDs are different then ECID will be different on same website for AA and AAM.
It's better to have AAM implemented separately and collect data website data from the data layer or custom events.
Also, contact AAM customer experience team if they have a suggestion.
Thanks,
Varun Kalra