I refer to page 12 of the below and found that your reported values are typical.
If your devices are relatively near to each other, you may want to reduce the Tx power (4dBm by default) to perhaps 0dBm. You may also at reducing at increasing advertising interval to reduce overall power consumption. Refer to pg 17 to 19 of the above.
Scanning is to look for advertisement. In order for "connection" to happen, the device must either "initiate" or "advertise itself".