I've seen the other side of this and it's not pretty. We had a round with a very indecisive manager who seemed to be apprehensive that an even better candidate

I've seen the other side of this and it's not pretty. We had a round with a very indecisive manager who seemed to be apprehensive that an even better candidate might come along next week. We interviewed 15-20 people over the run of 3 months, finally decided on someone and got in touch with them. They'd already taken a role. Tried our second choice. Then our third. Then we just started over. Unless the candidate is looking for you in particular, the better than candidate, the sooner they'll be off the market. The only candidates still waiting 3 months later are the ones everyone else has passed over. (This isn't particularly recent, and wasn't in the US. It's just stuck in my mind as a particularly educational experience.)