Is it possible to associate two service providers to one customer account for outbound xml messaging

We have multiple legal entities that share customer accounts, both legal entities need to be able to send xml outbound files, each legal entity has its own service provider.

Is it possible to connect one customer account to two service providers? And link the generation of the xml file to a legal entity identifier so that only one xml file is created for the correct legal entity.

I am aware that we can create multiple customer accounts and link them to each service provider but it would save time for our AR team if we could simply link the one customer account to multiple service providers.