If Natalie hasn't had a day sleep then she takes around 20 minutes (that's after stories, chats and cuddles) to fall asleep. (And she likes me to be in the room with her - I play on my phone while lying on the floor.)

Phoebe varies. Anywhere from 20 minutes to an hour-ish. But generally she only needs us to stay in her room (again, DH or I will play on our phone in an armchair) until she is in the 'zone', then it's ok for us to leave. On her unsettled nights she might cry out for us to come in and give her a cuddle and/or sit with her for a few more minutes (like 10). She's definitely off to sleep faster if she's really tired, but she's also a complete feral at dinner time on those nights too, LOL!