Email Showing as Quarantined in a Message Trace, but Not Showing up in MS Defender

A customer of ours was waiting on an email to arrive and to help figure out where the email was or if it was sent yet we ran a message trace. The message trace showed that the email was sent to quarantine. With this information in mind, I went to MS Defender > Email & collaboration > Review > Quarantine but could not find the message. 

I modified some of the filters and could not get the quarantined message to appear. I triple checked the filters I created and made sure the information was correct. I also removed all filters and looked for the time period the email came in, but could not find it.

Not sure if this is related, but this email had a significant delay likely coming from the sender.

  Any thoughts or ideas? Or anything that I am missing?