Hi @Leo Pure Electric,
Thinking through your scenario do you mind if I share an alternative approach to this?
Would you mind letting me know a little more about the flow you are looking to set up or a link to the flow if it's already been set up?
It would depend on what type of trigger is used to set up the flow. The type and amount of customer dynamic information is stored in the metric that is used to trigger, so you'll be able to pull in different information for different metrics. If it's a list based flow, you'll only be able to pull in customer properties and not dynamic content from actions they've taken.
I would actually recommend using a conditional statement within your flow for this email. Could you try use a conditional split and have a separate email for users who have purchased vs those who haven't? I feel like this might be the better solution than trying to create AND statements. We have a section in our Guide to Creating a Welcome Series that shows how to set this up.
Let me know what you think.
Alex