Make dns-sd exit after listing service

Is there a way to make dns-sd just list a service and then exit? I am using

dns-sd -L "abcdef123@MySpeaker" _raop._tcp. local.

To list an AirPlay device's details but it keeps running once that is done. Context: I have an AirPlay speaker that is slow to show up in the AirPlay speaker list on devices. The AppleTV shows up instantly so I was hoping to get some stats on when the speaker is slow to show up vs. not; as a way to understand what the issue might be.