Do I need to attach the Pagoda antenna that is supplied with the DJI Goggle RE when using it with the Mavic 2 Zoom?

No. That antenna is not needed when flying any DJI drone model.

Hi there, thank you for reaching out, you will only need to use that when using the Occusync camera module.

DJI Stephen Posted at 2018-9-6 09:37
Hi there, thank you for reaching out, you will only need to use that when using the Occusync camera module.

Or you are flying any analog transmitter for a race quad.