Hmmm… to me it looks like it actually should work. At least according to what’s written in this post “for each stateExtension”.
Actually, I already posted a similar question a bit later in the linked thread already some time ago, but as there was no reply, I considered it lost as the thread was quite old. Well, now there is an answer there 
sorry for being impatient.
Seems like the warning does not check if stateExtensions match and just counts the channels. If it would be done with this, okay, but it does not only warn, but also changes the timing (sampling interval) parameter, and yet I don’t know how to stop it from doing this…