Install both and be done with it. It really is that simple.
They are both elements of the Nahimic overlay Audio App popular on many Laptops.
"the tray icon is there again"
You must learn how to configure your applications, I get no Nahimic related tray icon.
Settings > System > Notifications > scroll down to Nahimic > Off.
Settings > Personalisation > Taskbar > Other system tray icons > A-Volute NS > Off.
If in the Startup Apps then, Task Manager > Startup Apps, disable it.
"I switch to another software because I did not like how Nahimic worked"
Of course you can if you wish, but you will just double the configurations you have not done, probably for no result.
Believing what you read on the internet from dubious sources is a mistake.
Mine has 2 Blocks for the 24H2 version update so it is not offered and probably will not be for a few months.