Split Bootcamp partition on external SSD

[nihil0]

I have installed Windows on external 1 TB Samsung T5 SSD. Is it possible then to split the SSD further so one part will be Bootcamp and one will be used my Mac as external storage?

 

[nihil0]

So since no one replied I decided to try it. In Windows I have split the volume into two 500 GB partitions and then created new NTFS volume. Then in macOS I tried to format that volume as APFS via Disk Utility but it wouldn't let me (some kind of error about not enough space on target volume). So I tried to do it via terminal diskutil and it worked. Now I have 500 GB Bootcamp/Windows part and 500 GB APFS part.

 

[nihil0]

Warning to everyone who will try it: splitting the volume will remove EFI partition/folder; I wasn't able to boot into Windows afterwards. No other files (system/apps/games) were removed though. You need to recreate booting partition by following this article: https://apple.stackexchange.com/questions/308729/recover-bootcamp-efi-folder-fix-boot-entries

Everything is working fine now.

EDIT: Booting only works via restart and holding option. I am unable to select bootable Win partition in macOS. Although it shows as Boot Camp partition, it states some “bless” error.