Schematic light curves for different two-jet scenarios. Different colors represent different observing bands, and dashed lines indicate possible components depending on specific parameters. Aligned fast jet (Γ₂ > Γ₁): three emission episodes (J1 prompt, J2 internal, jet–jet collision) may appear as multiple gamma-ray pulses. Aligned slow jet (Γ₂ < Γ₁): J2 internal emission appears as an X-ray flare, followed by an afterglow plateau from energy injection. Misaligned observer aligned with J2: an initial fast X-ray transient is followed by late-time off-axis rebrightening from J1.