Hi @Leonardo Iacoviello ,
you can use site-to-site
and point-to-site
with the same VPN Gateway.
Please see the diagram here: https://learn.microsoft.com/en-us/azure/vpn-gateway/vpn-gateway-peering-gateway-transit
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(If the reply was helpful please don't forget to upvote and/or accept as answer, thank you)
Regards
Andreas Baumgarten