When you are now in the position to ask a hard hitting question against them, they may try and evade the question or ignore it entirely.
Do NOT allow this; you have asked a question, now demand an answer.
At this point you halt the conversation and ask the question again, and this time clearly state that this is the second time you have asked this question.
Give them a forewarning that they only have one more chance to answer as a failed response to the question for a third time will result in default for them, and you will now be well within your rights to answer for them.
Note: Asking a question three times is a maxim of law; it dates back thousands of years.
There is a very real lawful and legal reason why you ask a question three times.
This can be used in a court of law. The defendant cannot make the claim they did not know about the question, if it was asked three times, and it is on the record.
For the same reason this is why an auctioneer will say going once, going twice, three times, gone. The auctioneer has given you three warnings to answer. The hammer goes down, the contract is concluded.
Question Three Times