About Meltdowns: IS it possible to have one while still carrying on with using Texting/Internetting?

Greetings anyone. Anyone who knows Me on here, may recall that I often say that although I am here, I know little about Social Media and The Internet. This Thread asks a simple question, and I hope for a simple(-ish) answer...

Please do not Quote or reference anything/anyone outside of this Thread, or else it might wind up being deleted!

I Myself sometimes "Shutdown" (I quit interaction when I can neither Reason nor 'Run away'.). But I have never to My memory had a "Meltdown", so I know less about that... I have read other Threads about it on here. ...But as I say, I have never connected the two together - Meltdown + While Using The Internet...??

I keep this OP short in hope again that it does not go off topic, much if at all. As usual, I offer apology in advance for any misunderstandings, and I try to present reasonable explanation for anything if possible... but I cannot do that if I know nothing about the subject, which is why I am asking this here.   Try to Stay Well, anyone reading.