We describe a new method for the simultaneous emission of two CO2 laser pulses from a single transversely excited atmospheric discharge. The transient gains of the pulsed low-pressure sections of two spatially separate hybrid cavities aligned on the discharge were temporally manipulated to allow low-jitter pulse synchronization. Independently frequency tunable dual laser pulses over arbitrarily selected rotational transitions spanning the available P and R branches of the 9 and 10 μm CO2 laser transitions were obtained, overcoming limitations on possible dual frequency combinations that restricted previous techniques. The result of numerical calculations for the hybrid laser, using a four-level rate equation model, supports the observed delay characteristics and provides a physical basis for understanding the dynamics of the synchronization.