I think they're two sides of the same coin.

_How_ do we have any experience will be more easily answered the more we know about _what_ we actually experience. And _what_ we experience is predicated upon _how_ we experience it. I agree both need investigating.

The _bigger_ question I see the coin representing is _who or what_ is experiencing in the first place? The way I see it, it's not really _a thing_ experiencing _something_ but instead _things_ experiencing _things_ at _times_.