access on premise HANA from/to HCP HANA

Hi there,

Does anybody know that it is  possible to access on premise HANA database from HCP using SDA (smart data access)?

or as opposite pattern, from on premise HANA Database to HANA on HCP by SDA?

My understanding is that we could not use SAP Cloud connector for above HCP-> on premise HANA access. So we need reverce proxy setting for this type of access.

Are there any other concern, or limitation if the HCP account is trial?

or any other way to use both (on HCP and on premise) database together ?

Any suggestions are welcome.

I already saw the topic Smart data access on hana cloud platform , but topic is still not completed .

Thanks and BR, 

Masashi