Can you use 2 headphones at the same time on Apple TV

Apple TV 4K with tvOS 14 supports Audio Sharing for two wireless headphones and earbuds from the Apple and Beats brands.

Use Apple TV to play audio throughout your home - Apple Support

• Share audio from Apple TV 4K with a second pair of headphones

Share audio with AirPods or Beats headphones - Apple Support

• Compatible headphone models

if all headsets and the model of appletv support bluetooth v5 then it's suppose to work,

otherwise no.