Welcome to the Microsoft Q&A Platform. Thank you for reaching out & I hope you are doing well.
I understand that you would like to know why there is a different subscription displayed for the vHUB VNET Connection.
Note that the vWAN vHub is deployed into a managed Subscription owned by Microsoft.
I understand, this should be visible to the customers during control plane operations (such as GET which you seem to be doing).
I shall pass on this feedback to the concerned Product Team.
Kindly let us know if this helps or you need further assistance on this issue.
Thanks,
Kapil
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