'Grey’s Anatomy': Camilla Luddington and Chris Carmack Address Jo and Link’s Romantic Future (Exclusive)

'Grey's Anatomy's Camilla Luddington and Chris Carmack open up to ET's Deidre Behar at PaleyFest about Jo and Link's romantic future. The actors also address how they’ll know when it’s time for them to exit the long-running medical drama. Plus, Chris reacts to the 20-year anniversary of ‘The OC.’ ‘Grey’s Anatomy’ airs Thursdays on ABC.