Reporting from two box

I have required 4 fields in the cube which is pulled for the SCem Box and 3 required which is pulled from R/3 box . Is that possible to report 4 fields from SCEM and 3 fields from R/3.

I am thinking build one cube for SCEm data and other cube to pull the R/3 data add to together as a multi cube . Then I will report 4 plus 3 fields from the Multi cube.

Please correct me If I am wrong.

Thanks in advance

Taj