Hello! I'm trying to make a data table show filtered, distinct records when selections are made in a combo box, please see below for example:

When a user selects equipment, remaining shows the inventory for that piece of equipment within the building in the first combobox.
The purpose of the data table will be to show the user that piece of inventory in places OTHER than the building being selected. So what I need it to do is filter out the non-redacted items from the building column, I got the equipment column to be what I wanted, but also the Remaining Column needs to only show values > 0. I also need it to be a distinct or grouped list so that the two blue-redacted items show only as one, the black redacted items will show as 1 as well, and it will sum the total items for those grouped in the remaining column.
Further insight for the PowerApps:
ComboBox1_1 = Distinct('Table', Building)
ComboBox1 = Distinct(Filter('Table', Building=ComboBox1_1.Selected.Result), Equipment)
Label = Sum(Filter('Table', Building=ComboBox1_1.Selected.Result && Equipment=ComboBox1.Selected.Result), Remaining)
Equipment Column in Data Table = ComboBox1.Selected.Result
Is this even possible? If so, please help me navigate through this - I've been trying to get it set up correctly to no avail. Thank you all!