If both spells have the same base order id they might affect each other.
Not might, but will 100%.
Use Channel as your base ability, because that ability has the option to change its Order ID under Level X - Data - Base Order ID
field in Object Editor.
Channel is an ability, not Channeling, it's 2 different thing.
* Object Editor -> Abilities Tab -> CTRL + F -> Type in "Channel" -> That's the ability.
Just change it to anything you want, anything works.
Just don't change it for both spells, having same Order ID, it would override
For example you have 2 abilities that have same Order ID;
So when one of them is activated, others gets activated too because they have the same Order ID.
What you should do, is change them to not have same Order ID;
"channel" and "charm" are both different Order ID, therefore there will be no more override of Order ID would occur (unless you have another ability that have the same Order ID as "charm" / etc)