A very nice thread, the only one with useful advices I could find nowadays.
So, basically, the total: there is no a cheap dual-wifi/equal to HDMi-audi-connection device that sounds the same as wired HDMI/optical and doesn't have an inner DAC. So if I wanna use an external DAC/AV connected either way to ATV, I can't find it on the market with a low price as just a streaming device (only AEX/ATV/Chromecast) just to transfer audio. And the only way that I may try is a Synrcho-Mesh for low jitter, but nothing will make it as good as HDMI/optical, because the lower a bandwidth/upsampling still be presented.
And just a rhetorical question: why just there is no such a device that provides a full bandwidth and not being a DAC > 200$? What's the point if it's a really needed thing for hi-fi/MQA with either a Tidal/CD/wav/flac. I started to dive in all that not a long time ago, but this is the main issue I stuck with and now siting with HDMI Mac-->DAC :-D