The conversation between human and AI assistant.
What might it mean when a phone call goes straight to voicemail?
That's a good point. What about when the call goes straight to voicemail and then I get a call back later on?
That could mean that your friend was busy or could not answer your call at the time you tried. They may have seen that you called and returned the call when they were able to do so. Alternatively, they might have missed your call and only saw it later on.