If you just want to select a signal, stick to it, and stop sending it when it's no longer present in the input, you don't need all of that.
This is what I use to throw away excess on my space platforms:
0eNrFV0tv2zAM/iuCLtsAtUgcO20NbLdil2GH7VgUhmIziVBZ8iS5XlD4v4+SnDRt3MeydUMutGQ ...