Viral photo shows Warren sitting behind Sanders on flight to Miami

Sen. Elizabeth WarrenElizabeth Ann WarrenThe Hill's 12:30 Report: NY Times story sparks new firestorm over Kavanaugh Working Families Party endorses Warren after backing Sanders in 2016 Warren proposes new restrictions, taxes on lobbying MORE (D-Mass.) may be ahead of Sen. Bernie SandersBernie SandersChamber of Commerce argues against Democratic proposals for financial transaction taxes Top Sanders adviser: 'He is a little bit angry' Working Families Party endorses Warren after backing Sanders in 2016 MORE (I-Vt.) in some 2020 presidential polls, but she was seen sitting behind him on a Thursday flight.

The two White House contenders were seen sitting a row apart in a photo tweeted by The Hill’s editor-at-large Steve Clemons.

The flight was heading to Miami, where the first round of Democratic debates are being held next week.

Social media users shared the image, many joking about the candidates' placement and the expressions on the faces of their fellow passengers. 

Warren narrowly edged Sanders by 1 point in a new Economist/YouGov poll released on Thursday, although both trailed front-runner former Vice President Joe BidenJoe BidenThe Hill's 12:30 Report: NY Times story sparks new firestorm over Kavanaugh Top Sanders adviser: 'He is a little bit angry' Working Families Party endorses Warren after backing Sanders in 2016 MORE.

Sanders appeared to knock his Senate colleague in a tweet Wednesday referencing corporate Democrats supporting "anybody but Bernie," but he denied it was a shot at his fellow progressive.

“That tweet was not about Elizabeth Warren at all. Not at all. Elizabeth is a friend of mine, and we’re going to run what I hope are issue-oriented campaigns," Sanders told CNN's Chris CuomoChristopher (Chris) Charles CuomoSuper PAC head spars with CNN's Cuomo over Ocasio-Cortez ad Nadler: Impeachment inquiry a 'made-up term' but it's essentially 'what we are doing' CNN climate town hall finishes last in viewers among cable news broadcasts MORE on "Cuomo Primetime."

"This was, though, a very strong statement about a group called Third Way, and you know that Third Way is the corporatist wing of the Democratic Party," he continued. 

Sanders's remarks come hours after he referenced a Politico article about how Democrats are running to Warren's campaign in a bid to block him from getting the nomination. 

The two candidates will appear on the debate stage on different nights next week, avoiding a face-off for the time being.