According to Osho, these practices are not bound to clock-time: do whichever takes you deeper, whenever it suits. If they feel complementary, use both morning and evening; if one doesn't resonate, drop it. A single method can lead to the same result as both together. Choose by inner response and convenience, not rules.
Do the practice that helps most whenever it works for you; use both if helpful, or just one, and you’ll still reach the same goal.