PowerApps CanvasApp: In dropdownAntenna I want to show first the already created Antenna's first (these are in the gallery) and with and extra item "..." If the user clicks this "...' then I should be able to filter all the Antenna's names from Dataverse like items property of this dropdown now is: Filter(AntennaSpecs, Technology <> "TDD").SearchHWCatalogueName

This works fine but we need to reduce all the collections that's slowing down performance because we can directly use Dataverse.

I think we can use the "..." value that's not in the Dataverse in the OnSelect property of dropdown and then filter the table. But how to show the already created Antennas from gallery first?