Tunnel d’arbres - question

If you are already in a tree with Arbre creux, can you cast Tunnel d'arbres to move to another tree while INSIDE the tree, or do you have to leave the tree and then cast the spell?

En réponse à tes autres questions, Marie-Hélène a dit que l'on ne pouvait pas incanter lorsque l'on est dans un arbre... Alors j'imagine que tu dois donc sortir de l'arbre!

Yeah, I know that is what she said, but I was wondering if this spell was the exception to that rule, since that is often how the dryads to it. They talk to you in a tree and then after they are done, they sometimes shove you into another tree much further away.

The reason I ask again for clarification, is because before you couldn't share trees or talk in trees...but that has since changed based on how dryads do it, so I was wondering if this also followed that pattern

For the dryads its not a spell but an ability