abap proxy call : synchronous / background ?

Hi,

I use currently abap proxy call to send data from ECC to XI, and it works fine ! But... I would like to know two points :

1. Is it possible to execute SYNCHRONOUSLY this call abap proxy and not only in asynchronous...

2. Is it possible to execute in BACKGROUND this call abap proxy, because it seems it use a dialog process, even if the call is inside an abap program executed in background 😔

I will appreciate your feedbacks on these both points ?

Regards.

Mickael