What is the most immediate difference in ear and tail structure used to quickly separate a bandicoot from a bilby?

Answer

Bilbies typically possess very large, rabbit-like ears and long, often tufted tails

Bilbies generally have much larger ears resembling a rabbit's and longer tails, often tufted, whereas most bandicoots have relatively smaller ears and shorter, thinly furred tails.

What is the most immediate difference in ear and tail structure used to quickly separate a bandicoot from a bilby?
animalmammalmarsupialcharacteristicBandicoot