5 Day shenzhen VOA, Can I take Ferry from Hongkong Airport to Shenzhen airport and still get them?

Dear all in this forum,

I'd like to check with you that with the regulation stated that to get ShenZhen 5 day VOA, I have to enter ShenZhen from Hongkong, correct?

I just saw that there is a ferry trip traveling from Hongkong Airport to ShenZhen Bao'an international airport where they have VOA point also.

Could you please help confirm with me that if I take a ferry from HK airport to Bao'an int. Airport. I can get ShenZhen 5Day VOA at Bao'an or not?

Also when I landed at HK airport I have to go through HK Immigration to get the Hongkong Entrance and collect my belonging first before heading to the ferry trip to Bao'an International airport to get the 5Day VOA at Bao'an counter?