integration with CX Sales with n:m account for contacts

we are integrating Eloqua with CX Sales, but on our Sales implementation the link between account and contacts was implemented with an inter-table.

then, on Sales, single contact can be linked to more then one account, and they actually have more then one contact with same Email address.

with the CX Sales integration app we are able to read this inter-table but how we can proceed to link contact to more then one account and how to manage contacts with same Email address?

Thanks for help