Only components with eARC will enable audio return channel without HDMI-CEC having to be enabled. TVs and receivers with ARC must turn on HDMI-CEC to enable ARC. With HDMI-CEC and ARC on, the receiver will automatically switch to the TV input to play the ARC content. Some receivers switch to the TV input almost immediately when powered on if ARC is enabled. ARC will not pass lossless audio though it may pass Dolby Atmos from a DD+ signal. Netflix requires devices decode Atmos natively and not just pass it through. So, some TV Netflix apps will output a DD+ signal without Atmos. Only discs have lossless Atmos from a Dolby TrueHD bed layer. This will not pass over ARC but is supposed to work over eARC. Some receivers will display Dolby TrueHD instead of Dolby Atmos if there are no Atmos speaker channels assigned to the receiver. The OP will not get Dolby TrueHD or Atmos from the blu-ray player if he is connecting it directly to the TV. The OP can send video to the TV with the HDMI 1 output of the player and use the HDMI 2 output to send audio to the receiver and will get lossless audio out of the receiver. However, if ARC is active for TV apps, the receiver will switch to the TV input when the TV is set to the HDMI input that is connected to the blu-ray player. The OP will have to manually swith the receiver to the blu-ray input to get the audio from the player back. There could be other HMDI-CEC issues with this setup. As was mentioned, the least amount of problems will be had if connecting the player to the receiver directly.
