Final answer:
The question lacks sufficient context to provide a definitive answer on the stages of a notification message. It seems to mix concepts from IT and telecommunications, suggesting a scenario that could relate to radio communications or astronomy.
Step-by-step explanation:
The question "What is the first and last stage of a notification message?" appears to be incomplete or out of context, as it doesn't provide enough information about the nature of the notification message in question. Typically, a notification message exists within the realms of information technology or telecommunications, where the first stage might involve the generation or trigger of a notification, and the last stage often relates to the receipt or acknowledgment of that notification by the end user.
Concerning the parts of the question asking about the direction from which a message is coming and on what channels or frequencies the message is being broadcast, this seems to imply a more technical scenario, possibly relating to radio communications or astronomy. Without further context, providing an accurate answer is difficult, and these latter questions seem unrelated to the concept of a notification message's lifecycle.