Instead of interrupting the stream with an ad and minimizing the stream above the chat, flip it. Keep the stream running normally, but periodically add silent ads above the chat. If the viewer wishes to see more of the ad, they can click the ad to play a full version (and maybe be rewarded with bits that can be used with the current streamer), with the stream minimized above chat like it currently is. This eliminates unintended interruptions and still allows advertising space.
Instead of interrupting the stream with an ad and minimizing the stream above the chat, flip it. Keep the stream running normally, but periodically add silent ads above the chat. If the viewer wishes to see more of the ad, they can click the ad to play a full version (and maybe be rewarded with bits that can be used with the current streamer), with the stream minimized above chat like it currently is. This eliminates unintended interruptions and still allows advertising space.