Get-InboxRule cmdlet
Does the Get-InboxRule cmdlet pick up SMTP forwarding created through OWA?
I believe Erin refers to forwarding set via the OWA settings page, not rules. In which case the answer is no. But you can still use PowerShell to report on it. Here's a sample script I wrote that covers all forwarding methods: https://gallery.technet.microsoft.com/Office-365-Mailbox-959f4ce5?redir=0
