The first clue is the date of the emails. The original email was sent on August 27, 2015, and the followup emails were sent the following day on August 28, 2015.

So was Hunter Biden in the news in August 2015?

Indeed, he was.

Hunter Biden denies link to Ashley Madison

https://edition.cnn.com/2015/08/25/politics/hunter-biden-ashley-madison-denial/index.html

https://archive.ph/8lNlx

How did Tucker Carlson help steer the narrative? He lost his shit on a London editor, who likely worked for the Daily Mail.

This article was published on August 25, 2015-

Now Joe Biden's son is caught in Ashley Madison hack: Hunter says account is 'not mine'- but why was a credit card registered to his address used to pay for the site?

https://www.dailymail.co.uk/news/article-3210296/Wasn-t-VP-s-son-Hunter-Biden-says-Ashley-Madison-account-registered-email-address-NOT-work-trying-discredit-him.html

https://archive.ph/2r7hU

And this article came 2 days later, on August 27, 2015-

Hillary Clinton denies holding backroom talks with Joe Biden as Vice President confirms he is considering 2016 bid

Hillary Clinton has denied holding 'back room' talks with Vice President Joe Biden over his potential bid for the 2016 presidency, adding that he needs 'time' to decide whether to enter the race.

Clinton, who is still the Democratic front-runner despite being plagued by the email security scandal, said Biden had a 'very difficult' choice to make, particularly after the death of his son Beau.

https://www.dailymail.co.uk/news/article-3212362/Hillary-Clinton-denies-holding-backroom-talks-Joe-Biden-Vice-President-confirms-considering-2016-bid.html

https://archive.ph/0aoYR

And then this happened on September 5, 2015-

Will Biden opt out of a run because of Jill? Insiders say vice president's grief-stricken wife isn't eager for another campaign after he lost son to brain cancer

https://www.dailymail.co.uk/news/article-3223586/Will-Biden-opt-run-Jill-Insiders-say-vice-president-s-grief-stricken-wife-isn-t-eager-campaign-lost-son-brain-cancer.html

https://archive.ph/57DYF

And, of course, Lin Wood exposed this over 5 months ago on his Telegram channel-

The pro-Trump lawyer Lin Wood shared a screenshot on Telegram that he says proves Tucker Carlson and Hunter Biden have a 'buddy buddy' relationship

The Donald Trump-allied lawyer Lin Wood claims that the Fox News host Tucker Carlson and Hunter Biden, President Joe Biden's son, have a "buddy-buddy" relationship. On Thursday, Wood posted what he claims is a conversation between the two as proof.

While it's unclear who originally posted the email exchange between Biden and Carlson, Wood uploaded the unredacted and unverified screenshot to his Telegram channel on Thursday night. It appears to show three emails between Biden and Carlson from November 2014.

https://www.businessinsider.com/lin-wood-email-screenshot-telegram-tucker-carlson-hunter-biden-friendly-2021-12

https://archive.ph/Nbuvs