Hi VDP,
I understand that there are two user accounts in Office 365 (Huw@domian.org & Paul@domain.org). You said your Office 365 account can receive emails from info@domain.org, which account has received the email, Huw@domian.org or Paul@domain.org?
Please send the message header of these emails to me via private message.
Besides, you can try to create these two accounts Huw@domian.org & Paul@domain.org in Office 365, and then configure inbox rule.
Thanks,
Young Yang