Beta testing Adrian Granados AirTool Pi app, connected via USB-C cable to the Hamina Wireless new Clip Wi-Fi data acquisition device... with 2 tri-band radios you can do packet/frame captures over two Wi-Fi NICs in whichever band/channel/channel width you configure. Additionally, Adrian added the ability to scan across ALL channels or frequencies and you can even set the channel dwell time.
So fast and easy to configure.. Then just AirDrop the captures back to your MacBook for Wireshark analysis. Sweet!