Facing issue to get RAN messages (F1ap,NR-RRC etc) while trying to capture between gNb and UESIM

[soumojit011]

Heloo All,
I have deployed Open5GS Core in one vm(192.168.56.103) , UERANSIM in two different VM (first one using as gNB: 192.168.56.104, and second one using as UESIM:192.168.56.105). All VM's are internally connected with each other by openssh. I am able to start the both gNB and UESIM; and PDU session is also getting successful-- (As message shown below)

--- [2022-07-15 15:56:15.940] [app] [info] Connection setup for PDU session[1] is successful, TUN interface[uesimtun0, 10.45.0.2] is up.

while analyzing packet flow between each VM, I am only getting core to RAN messages (NGAP/NAS-5GS). Even if I try to capture RAN messages between .104 (gNB) and .105 (UESIM) still no specific RAN messages like: NR-RRC etc is not getting captured on wireshark. But I can see internal message has been transmitted between gNB and UESIM by wireshark capture which shows message flows in UDP format. Below are the screenshot--

--- My query: Is is not possible to get proper capture (wireshark) for getting RAN messages between gNB and UESIM? If any such process available kindly anyone answer.
NOTE: The initial RAN messages can be partially decodable using the HEX stream of the UDP packets (between .104 and .105) using any free ASN decoder tool. Below attached snapshot of one which I tried using 3GPP Protocol decoder--