SEP GUP

Hello everyone . I just wanted to confirm one thing. Can we make the GUP server download definations from the internet if it is unable to reach SEPM to get the content or for whatever reasons it cannot download definations from the SEPM server.

For a group if we have enabled all the options for LU , then precedence that clients use to grab content would be like this.

1) First try GUP ( whatever type is)

2) If can't reach GUP try SEPM

3) If cant download via SEPM try Internet

Now since GUP is also a SEP client having an additional GUP server role enabled and also part of the same group where the LU policy is applied and it is GUP for the same group . The above logic except point ( 1 )  doesn't apply to GUP ?

Thanks