Complex sentence: The next day, Jamie goes to Darla and Clark's house (since they're now married) to talk to Darla, but in the meantime Chris goes to Clark's workplace (dentist's office) to talk to Clark.
Split into simpler sentences: The next day, Jamie goes to Darla and Clark's house, who are now married, to talk to Darla. In the meantime, Chris goes to Clark's workplace, a dentist's office, to talk to Clark.