Test is Peripheral.uart >Bluetotth>>Bluetotth>Central.CPU>Bluetooth>> Bluetooth> Peripheral.uart

Peripheral > Central is 38 bytes (send command)
55 AA 24 32 01 02 03 04 05 06 07 08 01 02 03 04 05 06 07 08 01 02 03 04 05 06 07 08 01 02 03 04 05 06 07 08 E8 77
Answer is 38 bytes
55 AA 24 52 01 02 03 04 05 06 07 08 01 02 03 04 05 06 07 08 01 02 03 04 05 06 07 08 01 02 03 04 05 06 07 08 08 77

 for uart_rx_enable(,,,1), 1 ms timeout set.
This is done so as not to affect the serial port of communication. 
And when transferring between the two processors (serial ports are not used), on both boards,
the times are the same, about 50ms in one direction over Bluetooth.

Three attempts have been recorded. Waiting before each command 100ms.
