DD, DD+, DTS etc. with Marantz AVR

Greetings,

I have the Vero 5 connected into an LG 65" G3 OLED (connected via ARC into my Marantz SR5007), and when I turn on passthrough and enable DD, DD+, DTS, DTS-HD, TrueHD etc. the sound comes out very garbled (only on shows that have said output; menu sounds are fine).

I’ve had a look through Audio hardware and software configuration and from what I can see, the reason for that is due to my Marantz AVR only supporting ARC and not eARC. Does that sound right?

If I plug the Vero 5 into an input on my AVR, then the same file I play the audio works fine with passthrough enabled.

So, if I want to keep a single remote (TV) and have the proper audio passthrough, then I need a newer AVR, right?

In the meantime, the alternative is to just plug the Vero 5 into the Media Player (HDMI) input on the amp instead and just use the Kodi remote? Am I missing anything?

If you upload a log, we should be able to see the capabilities of the remote and TV, but ideally post logs with Vero V connected directly to TV, then one with Vero V connected directly to avr.