If me and somebody else are in comment and they get long and it says to create a chat, and so I click that link and it makes a comment from me saying "Let us continue this discussion in chat. " and I can type in there but I can't do @ his name. And I see that that link saying "let us continue" doesn't have @ and his name either. Is that person going to get pinged? about the comment saying "let us continue.." or with my message in the chat?

'cos if not then I should probably make another comment afterwards saying "^^^" pointing to that chat link.

If me and somebody else are in comment and they get along and it says to create a chat, and so I click that link and it makes a comment from me saying "Let us continue this discussion in chat.", and I can type in there, but I can't do @ his name. 

And I see that that link is saying "let us continue" doesn't have @ and his name either. Is that person going to get pinged? About the comment saying "let us continue.." or with my message in the chat?

Because if not, then I should probably make another comment afterwards saying "^^^" pointing to that chat link.