As a result, the episode featured the conclusion of several story arcs, and series co-creator Josh Schwartz boasted that it would end with the "best 10 minutes in the show's history".

When Casey awakens, he reveals a critical clue hidden in his pants: the Hydra database stored in the glass eye of Yuri the Gobbler.

Meanwhile, in Moscow, Sarah and Mary Bartowski infiltrate Alexei Volkoff’s office, trying to access the Hydra network, which is hidden on a ship called The Contessa.

Back in the U.S., Chuck flashes on the eye fragment, discovering it was designed by Roni Eimacher, a kidnapped engineer forced to create the device.

The SUV with Volkoff arriving at The Contessa referenced Back To The Future with the license plate 1PT21GW (1.21 gigawatts) "Chuck Versus the Push Mix" drew 5.57 million viewers.

Sepinwall also wrote, "Kudos to whichever member of the production team - whether it was writers Rafe Judkins and Lauren LeFranc, or director Peter Lauer, or someone else - decided to frame the proposal in the background of the shot, with the dialogue overwhelmed by the sound of the floor waxer.

We already heard the big flowery speech and swelling music when Chuck almost proposed in 'Chuck vs. the Balcony,' and we know from Levi and Strahovski's body language what happened here - I say give the kids a little moment to themselves, okay?

Club gave the episode a B. Heisler stated, "Thankfully, there were literally only two moments in 'Push Mix' that felt remotely gratuitous on the Chuck and Sarah front: One was the major smooch when the two reunite on the Contessa; the other comes at the very end, a marriage proposal overshadowed by the whir of a hospital floor waxer.