For my business, timing is incredibly important.
As an injury lawyer, I'm an investigator whose job is to gather evidence to build my client's case. The sooner I can start investigating an accident, the more evidence I can collect. For example, local businesses often have surveillance footage capturing an incident, but they don't keep their footage forever. Similarly, when I can speak to witnesses sooner rather than later, I can get their recollections of what they saw and heard while their memories are fresh and sharp. In my experience, witnesses are also more likely to want to help when they just saw an accident, but if I call them six months later, their memories have often faded and/or their willingness to help has diminished.
So, if someone has a referral for me, I can help most when I'm connected to a potential client immediately.