Dental and vision are never included in US health insurance and operate on a totally different confusing insurance framework. They’re only available through separate plans and have their own deductables and terms. But unlike health insurance the premiums are generally orders of magnitude lower for both vision and dental.
The problem I’ve had is that the maximum benefit is typically in the range of $2k-$3k/yr for dental which is quickly hit if you have any oral surgery needs. Unlike with healthcare I don’t feel ripped off when paying for dental/vision since the few hundred dollars per year covers preventative care visits too.
Nah the side rows are for when you expect the lecture to be boring or unproductive and you want to leave early.