In accordance with an embodiment, apparatuses and methods are provided for coordinating operation between leadless pacemakers (LPs) located in different chambers of the heart. A method includes configuring a local LP to receive communications from a remote LP through conductive communication over first and second channels, maintaining the first channel active for at least a portion of a time when the second channel is inactive to listen for event messages from the remote LP, detecting an incoming signal at the local LP over the first channel, determining whether the incoming signal received over the first channel corresponds to an LP wakeup notice, when the incoming signal corresponds to the LP wakeup notice, activating the second channel at the local LP, and receiving an event message over the second channel from the remote LP.