Hi @Anonymous ,
Maybe you could try to optimize your Flow structure.
1. Try to use the Odata Filter.
2. Get unique value of owner email address using array variable and union function.
I have made a simple test for your reference.
1. Here is my list.

2. Here is my flow.
internalcolumnname ne '@{null}'
items('Apply_to_each')?['personcolumn/Email']
union(variables('OwnerEmailAddresses'),variables('OwnerEmailAddresses'))
item()?['field name']




Result Screenshot:

In addition, here is a link that might help you:
https://www.enjoysharepoint.com/power-automate-sharepoint-get-items-filter-query/
Best Regards,
Charlie Choi