You can't tab what you can't hear; if you can guess the scale/chord, you basically know which notes you can use to transcribe something and which ones you cannot so, even if you can't clearly hear every single note that's being played without slowing down. Reminds me how some people find it so unbelievable that others can transcribe so fast. If it's buried in the mix or otherwise undistinct... good luck! That said, the lack of attention is indeed sad. I like the feel of the bass shaking my body, so sometimes I enjoy listening to bass stems... or go to Felipe Andreoli's (Angra's bassist) YT channel. To be honest I still think that the guitars are crushing the mix, so your mileage will undoubtedly vary. Even if I'll gladly admit this wasn't the kind of song I was expecting DT to write at all.