Hi @fgonzalez515,
Based on your description, I have made a simple test for your reference.
1. I have a Excel file called FilterArray, it stores three tables (Table1, Table2, and Table3).

2. Here is my flow:
@and(equals(item()?['Rut'], items('Apply_to_each')?['Rut']),equals(item()?['CR Luciano'], items('Apply_to_each')?['Obra']))
length(body('Filter_array'))



3. Result screenshot:

Best regards,
Sylvia