2 BW servers to one Enterprise portal

HI,

We have BW 7.3 system connected to Ent Portal 7.3. Now we want to add another BW on HANA system to same Enterprise Portal. So basically Two BW systems (BW 7.3 and BW HANA) talking to One Enterprise Portal.

Is that possible? I read one SDN thread ruling out possibility due to BI template (System Landscape) SAP_BW would be already assigned to first BW system. MY question is can we create copy of this template SAP_BW to SAP_BW1 and connect that to 2nd BW system. So that each one talk to there respective BW system?

Thanks

Vik