What content is sent in MSG3 during NR RACH in ENDC?

5G NR
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RACH Msg3 transmission:
• UE receives the UL grant in RAR Msg2 received from the gNB.
• The UE sends the RACH Msg3 containing the 48-bit Contention Resolution ID (CRID)

After transmission of Msg3, UE starts the MAC contention Resolution timer
• The MAC contention Resolution timer monitors the reception of Contention Resolution Grant

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In cases where contention-free RACH is possible (e.g. HO or ENDC setup)

If contention-based RACH is used by the vendor, msg 3 includes C-RNTI for contention resolution and may also include BSR