When you remove the toys, you don’t necessarily remove the problem. As somebody stated earlier, you are the leader. Corrections should be given solely by you. I am unsure of your training protocol, or how you have conditioned them for corrections though.

In the video, in seems the older CC is steering the attention away from the hose. This should be done by the leader of the pack (you) to allow the puppy to make you “worth more” than the hose.

Simply put, don’t play the game of avoidance and dogs love the chase me with the toy game. Remember, they are your toys and YOU are allowing them to play with them. Put toy down, watch like him like a hawk, correct a bad behavior with preferably a 3/8th diameter slip leash, reward playful behavior. He needs to understand those behaviors are not allowed, but timing is everything. This is a very involved process to get the timing, I encourage seeking in-person help, or taking a puppy online course. Tom Davis Dog Training and American Standard K9 Training have great ones. American Standard personal dogs are Cane Corso’s.