The former. That particular pattern isn't unfamiliar to me.
[He's careful not to clarify if he means in dreams or in the waking world. The answer is both, and they don't need to know how much time he spends in that study brooding when they're not home.]
no subject
[He's careful not to clarify if he means in dreams or in the waking world. The answer is both, and they don't need to know how much time he spends in that study brooding when they're not home.]