Naughty girls!

Can anyone help? I have had trouble with Lily pulling so I used a halti, then I thought I would try her without it as it pulled her sweet face. I bought a chain lead and have been trying to train her not to pull by stopping when she pulls. Lola (who didn't pull) has started pulling and barking at other dogs! They also play fight on their leads on the way home from a walk sometimes. It looks and sounds dreadful with growling, biting and showing teeth although they don't hurt each other! Today a girl with a JRT went past, Lily started pulling, Lola was practically on her hind legs barking and straining on the leash. I eventually got them under control then they started the play fighting, growling, snarling, biting and getting tangled in their leads. I felt out of control as Lily is strong and nearly had me flat on my face. We must have looked ridiculous

Sorry I can't comment too much as I'm just about to get to this hurdle when Tommy strts to go out walking , however I'm sure someone will be along soon to hopefully help you a little more.
Is Lilly ok on her own or not ?? you say you stop , to try and stop her pulling , you should be (from what I see on here) stop and turn to walk in the other direction ?? when you say chain lead , do you mean a check chain ??
I know its more work but maybe the key to this is to ascertain if Lola will walk normally now or has picked up bad habits , so try walking them separately. Do you use 2 separate leads for walking or one of them doubler things on one lead ??
Is there anybody that could help you to walk them together so they have a bit more separation ??
Sorry if its not much help but only a few ideas good luck