what is the difference between hdmi arc and earc?

HDMI ARC vs eARC, Which One Is Better for Your Home Theater? - The Plug - HelloTech

Is eARC the same as HDMI 2.1? –

Optical vs HDMI: Which Is Better?

What is HDMI ARC and eARC? - Geeky Gadgets

what is the difference between hdmi arc and earc?

HDMI ARC and HDMI eARC: Everything to know - Reviewed

What is eARC and How Does it Compare to HDMI ARC?

VAX01202 HDMI eARC Audio Extractor & Splitter - FeinTech

What is eARC and how does it compare to HDMI ARC? - SoundGuys

Difference between HDMI ARC and eARC

HDMI ARC and eARC: Audio Return Channel for beginners - CNET

WTF is HDMI ARC/eARC?

Etzin 8K HDMI 2.1 eARC Audio Extractor 7.1CH HDMI ARC eARC To Coaxial Optical Toslink SPDIF Stereo Analog Audio Return Channel Adapter : : Electronics