With good malt, good mash/sparge/boil and Irish moss (I use the regular kind not whirlfloc*) you might pretty well eliminate chill haze, but cold time will settle any that's left out. Filtering just separates what lies above from what settled out. Racking might do the same, but yeast remains the problem for me. I used to use gelatin AND filter, but realized this was just an extra load on the filter. Never just gelatin. So I'm wondering. (I remember the method, but don't even remember the dosage for gelatin. )
*Reason is that Irish moss is not very selective, it removes foam active proteins as well as haze active, so you want to use the minimum effective dose and no more. It's easy to weigh out Irish moss flakes and properly hydrate them, while Whirlfloc tablets are a massive overdose unless you grind them up and weigh it out. PITA.