@kdd281
--> I'm not sure what is the trigger that you are using to in Power Automate, you can try using the new trigger WHEN A RECORD IS CREATED,UPDATED OR DELETED. In this you can setup on which condition you want to flow trigger is that on creation or updating or deletion or two of them or all of them. In settings of the trigger action you will be able to find concurrency control you can also try increasing the concurrency limit and check if that helps.
--> There is an entity called OPPURTUNITY LINES that sits exactly between Opportunities and products entity from here you will be able to get all information related to either opportunities or products.
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