I have set up a PA / LNA and watched the radio details.
When the connection interval was 50ms, it was confirmed that the device was communicating every 50ms.
Look at this. RX is central, TX is peripheral.
I can see that packets are sent in the order of Central → Peripheral, Peripheral → Central.
But why is TX_LNA running before RX_PA?
I don't think the settings are wrong.