Imo the guy in the the YouTube video does not know his stuff. What does he do at feeding time ?. Surely he is not feeding them in the same enclosure. And if he is it worth the risk of one snake mistaking the other for food and inflicting serious damage on each other. Or what if he is separating them. This may be ok now but I would not like to be trying to move an adult burm who is feeding mode. This is just my opinion based on my personal experience I am no expert and would never claim to be