Mixed WPA2/WPA3 encryption

It is possible. But requires manual interpretation of the long output of a console command.

See "AKMSuiteSelector" of each device

Edit:

Definitions

#define WLAN_AKM_SUITE_8021X			SUITE(0x000FAC, 1)
#define WLAN_AKM_SUITE_PSK			SUITE(0x000FAC, 2)
#define WLAN_AKM_SUITE_FT_8021X			SUITE(0x000FAC, 3)
#define WLAN_AKM_SUITE_FT_PSK			SUITE(0x000FAC, 4)
#define WLAN_AKM_SUITE_8021X_SHA256		SUITE(0x000FAC, 5)
#define WLAN_AKM_SUITE_PSK_SHA256		SUITE(0x000FAC, 6)
#define WLAN_AKM_SUITE_TDLS			SUITE(0x000FAC, 7)
#define WLAN_AKM_SUITE_SAE			SUITE(0x000FAC, 8)
#define WLAN_AKM_SUITE_FT_OVER_SAE		SUITE(0x000FAC, 9)
#define WLAN_AKM_SUITE_AP_PEER_KEY		SUITE(0x000FAC, 10)
#define WLAN_AKM_SUITE_8021X_SUITE_B		SUITE(0x000FAC, 11)
#define WLAN_AKM_SUITE_8021X_SUITE_B_192	SUITE(0x000FAC, 12)
#define WLAN_AKM_SUITE_FT_8021X_SHA384		SUITE(0x000FAC, 13)
#define WLAN_AKM_SUITE_FILS_SHA256		SUITE(0x000FAC, 14)
#define WLAN_AKM_SUITE_FILS_SHA384		SUITE(0x000FAC, 15)
#define WLAN_AKM_SUITE_FT_FILS_SHA256		SUITE(0x000FAC, 16)
#define WLAN_AKM_SUITE_FT_FILS_SHA384		SUITE(0x000FAC, 17)
#define WLAN_AKM_SUITE_OWE			SUITE(0x000FAC, 18)
#define WLAN_AKM_SUITE_FT_PSK_SHA384		SUITE(0x000FAC, 19)
#define WLAN_AKM_SUITE_PSK_SHA384		SUITE(0x000FAC, 20)