The Saturn Train included Saturn, Venus, Mars, Earth, possibly Jupiter in front, plus moons & possibly asteroids & meteors.
The Golden Age started probably just after the Great Flood c. 3300 BC in the Kuiper Belt and ended c. 2600 BC just before the Younger Dryas events in the Asteroid Belt.
Earth was warmed by Saturn & possibly Jupiter until the Younger Dryas events, then by Jupiter alone, as Saturn was repelled back to its present orbit.
Jupiter remained in the lead, but Mars dropped out at its orbit, then Earth dropped out at its present orbit. Venus dropped out last at its orbit, then Jupiter returned past the Asteroid Belt to its present orbit.