You don't want to be rude and interrupt, and hijackers pick up on your unwillingness to take control and are enabled to disrupt with higher frequency.
You become paranoid to ask questions because you know they'll respond and consume more valuable class time.
In a panic, you start speaking more quickly and unintelligibly, rushing through the remainder of the lesson to make up for lost time AND to hopefully discourage the hijackers from butting in again with lengthy comments.
The other class attendees who want to participate feel slighted, even upset at how much time the hijacker(s) are taking up and either leave or mentally check out of the discussion.
You and the entire class miss out on a decent portion of the interactive, spiritually enriching discussion you meticulously prepared for AND the Holy Spirit would have facilitated.
Granted, in a post-COVID world, if you are following my advice and having a panel-style discussion for your online broadcast, you don't have to worry much about hijackers, but many of you are using Zoom or a phone conference, so the risk of hijacking is as high as before.
And with the vaccine now widely available, churches everywhere are making plans to reopen this summer, meaning that in-person classes may be a reality once again very soon. If you are truly committed to making your Sabbath School ministry a life-changing evangelistic tool, there is at least one unavoidable truth glaring at you in the face...