"No," he confirms. "We fled to Ossiriand for a while with those left of our people."

As for how Morgoth finally fell...Maglor knows there's a bitterness to his expression when he speaks, though his voice doesn't carry it.

"The Valar came, after a while, with reinforcements and overwhelmed him. Chained him. Threw him far from where he can attack until the End." At least, attack directly.