The Marker and The Brethren Moon paradox- what came first?

The paradoxical existence of the Marker and the Brethren Moons is a strange concept, as the Markers spread the signal that mutates life into Necromorphs, eventually forming a Brethren Moon, yet the Brethren Moons are responsible for creating and spreading the Markers to new worlds. This creates an unresolved loop—if the Markers came first, who created them? If the Brethren Moons came first, how did they form without the Markers?

The paradoxical existence of the Marker and the Brethren Moons is a strange concept, as the Markers spread the signal that mutates life into Necromorphs, eventually forming a Brethren Moon, yet the Brethren Moons are responsible for creating and spreading the Markers to new worlds. This creates an unresolved loop—if the Markers came first, who created them? If the Brethren Moons came first, how did they form without the Markers?