As Will Gardner is talking to Emily Tartan in her hotel room, his top button is done up and his tie is tied tight. Straight after Emily gets up, Will's phone rings and when he goes to answer his phone, his top button is undone and his tie is loose.
When David Lee is talking to Alicia in the office the first time, his Bluetooth earpiece is flashing in "pairing" mode, indicating that it is not connected to anything.