It's possible, but it's subtle.
Do you know that animal called Llama (closely related to the Alpaca)?
Gli is like that, G has no sound, but there is a weird thing between L and i.
For those used to Portuguese, gli uses the "lh" sound. And the indirect pronoun "gli" (Italian) is the same as "lhe" (Portuguese).
If you like analysing tongue positions, "li" is a tip tongue against the front top of the mouth. Now "gli" is almost a full tongue (middle mostly) spreading against the top of the mouth.
Difference between le and li? Only because of gender thus implying that "lei li trova" means "she finds them(masculine"?
That's right, I did some research about that and it turns out that 'li' replaces masculine plural nouns and 'le' feminine plural nouns.