MS Azure - IPSec Tunnel (S2S) with BGP Routing

Is there any documentation on getting BGP working through an Azure IPSEC VPN tunnel to an onprem Sophos XG 230?

I have an IPSEC tunnel established between onprem and Azure and would like to be able to route traffic from vnet peers and the Azure Point to site VPN back to onpremise resources.

Any guidance is helpful.

Thank you!

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[edited by: emmosophos at 11:47 PM (GMT -7) on 29 Apr 2021]