This episode officially confirms that Good Luck Charlie , Jessie , Shake It Up , and Austin & Ally all exist within the same continuity.
Much of the second half revolves around the characters trying to reconstruct their "wild" Christmas Eve. [S4E17] Good Luck Jessie NYC Christmas
Teddy and PJ travel to NYC so Teddy can tour NYU. After a snowstorm cancels their flight back to Denver, they run into Jessie and Zuri on the subway and are invited to stay at the Ross family’s penthouse. Meanwhile, back in Denver, Bob and Amy struggle to figure out what Charlie wants for Christmas. This episode officially confirms that Good Luck Charlie