For using flows on Outlook emails, does it read through emails in a specific order?

[jasb3h]

I have a flow that I use to save email attachments in Outlook upon flagging the email, but I need it to follow a sequential order of opening/saving the oldest to newest email attachments. I attempted a flow on hundreds of emails and found no pattern. Please help me understand how to enforce a rule that reads through the emails in ascending order.