Fiori Launchpad (FLP) and Remote Catalogs to another ABAP system

Hi,

I am a bit confused (not unusual btw)... Are remote catalogs in FLP only for accessing HANA or Social Media catalogs Remote Catalogs - User Interface Add-On for SAP NetWeaver - SAP Library? Or can you create a remote catalog that accesses another ABAP system? The scenario I am thinking about is where there is an ECC system with FLP and and SRM system with FLP, there is no Frontend Server or Hub so I would like to access the FLP on the ECC system and bring in a catalog from the SRM system. Users will only logon to the ECC FLP.

Is this a valid scenario or would I need to install the frontend components of the SRM fiori apps onto the ECC system?

Thanks in advance,

Simon