We discovered an issue (not a defect) with the Marketing Channels rules which it would be great if it was sorted 🙂
2 factors are combining to cause issues:
Marketing Channels rules run on every metrics call (page views and linking tracking)
Not all properties are available on link tracking metrics calls (e.g. pageName, URL, referring URL, query string parameters etc.)
As we have to rely on some of the properties that are not available on a link tracking call to correctly ID a channel, we are finding that if a link tracking call occurs before the first page view in a visit the channel is initially incorrectly assigned and then overwritten with the correct channel on the subsequent page view. This results in our data being skewed.
Got a feeling that this might be one that other Adobe clients may be suffering from but are unaware of.