當一個主設備和一個從設備建立連接以後，從設備，繼續廣播，主設備繼續掃描，會不會重複建立連接處理機制

When two devices are in a connection, the two devices act in different roles. A 
Link Layer in the Master Role is called a master. A Link Layer in the Slave Role 
is called a slave. The master controls the timing of a connection event. A 
connection event is a point of synchronization between the master and the 
slave. There shall be only one connection, whether or not established, between 
two LE device addresses. An initiator shall not send a connection request to an 
advertiser it is already connected to.
If an advertiser receives a connection request from an initiator it is already 
connected to, it shall ignore that request.

如果 廣播者接收到了來自已連接的initiator的連接請求，他將要忽略此請求。