some reasons cause "No connection for handle 0"

Hi, nordic team

There is an issuse happened in my custom board with nrf52833,programming in ncs v2.9.0.

peripheral side is programmed base on peripheral_hid_keyboard and central is programmed base on central_hids

When continuesly work serveal hours, it is possible for peripheral to output "No conntion for handle 0".

I find it is ouput in v2.9.0\zephyr\subsys\bluetooth\host\hci_core.c  line 581(static void hci_num_completed_packets(struct net_buf *buf) API).

I wonder which situations will result in this log output?

Best regard,

Martin

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