Yes, but only when system audio is set to “Dolby Atmos” (requires HDMI to Atmos AVR).
What Surround Sound Formats Does Netflix Support? Netflix supports several surround sound formats depending on your subscription plan, device, and content: netflix surround
Mobile devices default to stereo to save bandwidth. Casting to a TV may reactivate surround. Yes, but only when system audio is set
Yes, but separately: “Netflix Spatial Audio” (available on Premium plan) works with any stereo headphones, simulating 5.1 or Atmos. It is not true multichannel but can be effective. netflix surround