When you use Snow Day Gnar and you're in Mega form, you can't hear his dance audio. In Forecast Janna, when you use your joke, you can hear both Forecast Janna's joke and Default Janna's joke audio overlapping.
Hey SoulAnderson -
Thanks for the report!
We are aware of the Forecast Janna issue and are working on a fix! This should be resolved in 6.9. We are still working on audio theft if there is another Janna on the enemy team, but if you only have Forecast Janna in a game, it's fixed! :)
As for Snow Day Gnar, I'm looking into that issue right now. :)
