One of the first things I did when I was involved in the set-up of online support ticket system for a GB rail retailer was https://xkcd.com/806/ compliance. If the support request body contains the phrase "Shibboleet" the ticket will be assigned to an engineer.

Equally it's not hard to teach front-line when to escalate, and ensure L2 and beyond are approachable. Even better if L2/L3 can keep half an eye on tickets that come in for anything that looks particularly interesting.

While I haven't heard of that idea being implemented, I have heard of the support page you're looking at determine who you got routed to if you started a support chat.