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 if we can have a vWAN and a Secured vHub in different subscriptions.
This is not feasible.
The vWAN and vHub should belong to the same subscription.
However, you must note that you can,
- Create vHubs in any region inside a vWAN
- And link VNets in different subscription to this vHub(s)
- i.e, cross-tenant virtual networks to a Virtual WAN hub is supported
This is documented here
Also refer Any to Any connectivity
Here, VNets connected to region2 can be in a different tenant (child tenant), however, vHub in region2 belongs to the vWAN in Parent tenant.
Kindly let us know if this helps or you need further assistance on this issue.
Thanks,
Kapil
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