Lumira based on HANA requires 2nd logon

We published Lumira documents based on HANA (online or Offline) and published to BI platform.

Our users login to BI Launchpad and try to open lumira document. Again 2nd logon to HANA is required.

Is there anyway , can we avoid 2nd logon? I believe SAML SSO form BI platform and HANA is required to avoid the 2nd logon.

I just need to know how others are doing it. Is there any plan from SAP avoiding the 2nd logon?

We are also building Lumira documents source to Universe based on HANA views.

Lumira BIP add on 1.29

BI 4.1 SP5