Syndicate two main tables in one XML file

Hello experts,

Do you know if it is possible to syndicate two main tables in one single file?

I have created a lookup main table field where I realte the two main tables, but it is not quite working as I expected.

Is syndication two main tables a standard functionality?

Anybody knows where can I find documentation on this?

Anybody have done this and can share some tips?

I am on 7.1

Thank you for your help,

Claudia Hardeman