But that training doesnt always take.

When she goes to another level, Karev is waiting for her on a bench.

Was he happy for you?

At Arizonas house, Arizona has painted several squares of different shades of green on Sofias old bedroom wall.

Theres also a single blue square.

Its been too long since her babys been home.

The newbies are doing the same thing the old interns did: complaining about how tired they are.

He tells the understandably plane-wary Meredith to think of the plane ride as a roller coaster.

Before she can reply, the interns come stampeding by, shouting that theres an incoming trauma.

The next emergency vehicle holds the actual roller coaster car with the two riders still in it.

The big surprise, though?

The unlucky pair eerily resemble George OMalley and Cristina Yang.

Theyre even bickering like they did, too, and their names are Greg and Cleo.

She is a ringer for Izzie and even says seriously, like, a lot.

The similarities make the name of the coaster the Mirage seem especially apropos.

Jackson sees Meredith gowning and is confused since she has to be on his jet, heading to Boston.

He tells Jo that Liza is Izzie, and creepily, Jo responds, Seriously?

Meredith, Bailey, Webber, and April are still tending to Greg and Cleo when Greg stops breathing.

Unsurprisingly, this perturbs Cleo, whose angry outbursts sound so much like Cristina that I get goose bumps.

Pretend Im your friend.

Save me like Im your friend, Not Cristina pleads with Meredith.

Guess whos not going to Boston after that?

Who knew surgical supplies could be so sexy?

Feeling usurped, Owen mistakenly believes Amelias actions are about the French toast that morning.

Luckily for him, Amelia saves him while also managing to rub it in Owens face.

Greg needs a spinal fusion, and Webber and Bailey are operating on him when Webber calls him OMalley.

He tells Bailey that itll be good to be able to savethisOMalley.

Because Greg is her birthing partner and is obviously otherwise indisposed, she asks Karev to stay with her.

She goes into how much she misses Mark, even though she resented his perpetual ease.Your kids coming here.

Youre freaking out about paint colors.

After her baby is successfully delivered, Jo tells Karev to call Izzie.

He wants to picture Izzie as happy as he is with Jo.

As Meredith and April successfully finish Cleos surgery, Webber and Bailey come into the OR.

The rest of the staff and Zola file into the gallery above as they turn on a monitor.

Turns out the Harper Avery Awards are happening in that moment.

Owen and Meredith are standing outside Cleos room.

Really, you dont see the similarity?

Meredith asks, incredulous, before offering to text Burke a picture to see what he thinks.

Owen tells her theres only Cristina, and we know he isnt wrong.

Back in the tunnel where it all started, Meredith and Karev kick the interns off their stretchers.

Alex pops a bottle of champagne as Cristina calls to ask Meredith if she feels different.

Damn straight she does, Alex answers.

Merediths voiceover closes out No.

Damn straight they are.