Possibly should note:

There are various versions of the "Turing Test" (and in the last decade or so a number of proposed alternatives). Leaving alternatives aside, consider that there is a very big difference between ........

a) You are asked to chat to two clients. You are told before hand that one of them is an AI. After the chats you are asked to identify which.

b) You are asked to chat to two client. You are told afterwards that one of them is an AI and you are asked to identify which.

Now "a" is a much more difficult test for an AI to pass. But if it can pass "b" (not identified significantly more than 50%) would you say that it has failed the Turing Test?

How about a "c" version? You are asked to talk to two clients and told before hand that both may be human, one human and one 'bot, or both 'bots. In the scoring, false positives (acutally a human but identified as a 'bot) used to adjust the identification scores for the 'bot.