When I'm playing piano, just mucking about over a chord sequence, I tend to have my left and right hand close together e.g my thumbs are only a tone or so apart. I think in a band that would be good because you don't want to clash with the bass, but is it good practice for playing piano on it's own, or should I aim to have an octave gap (or half-octave) to broaden the range?
Of course it will vary depending on what I'm trying to play, but as a rule of thumb should my hands form one extended chord, or be separated so I can add in more bass elements?
I should add, I'm only a novice player so I cannot run my hands quickly up/down the keyboard, each hand is (roughly) staying in place for each chord/phrase.