This question may have been answered by others in this forum, but I will give you a synopsis of what I have learned after talking with the tech support at Insteon. The behavior you are experiencing is expected. Unfortunately, Insteon devices do not send a notification when turned on or off by command through the Insteon hub. Flows are the same, as they use the hub to turn on and off the device in response to a command using the Insteon API. You must work around this by using the flow to turn on your yard light directly at same time you request the porch light to turn on by executing the flow.