The level of knowledge required for this webinar

Is the webinar correctly placed in the course flow? I am asking this because at many places in this webinar, sir mentions some things saying that we must have done such thing in java, now let us do this in kotlin, but nowhere before this video, such things come. E.g. Arnav bhaiya shows how to handle button click in kotlin saying that we have already seen such thing in java but we only have covered layouts and vies so far…

I thought that this course is self sufficient for beginners like me (as mentioned while buying the course)

Webinars are placed in correct order. You can google some things or else you can ask them on this forum which you feel are not covered before.