Ask HN: Good practices to promote B2B posts on LinkedIn

In recent changes, appears LI limits impressions when you post external links or even promote LI Company page posts.

I have spoken with many and found that to get engagements they hack the system 1) Large companies get their employees to engage with posts. They send internal slack/email to promote a post.

2)SMB work with partners to engage with posts. They send internal and external email or share on LI groups to promote a post. Yes, this goes 2 ways you promote mine and I return the favor.

3)Pay influencer to give a shoutout or a 90sec video podcast/interaction.

LI in investing in re-vamping its feed, but surprised that they are unable to trace these practices of gathering engagement.

Do such pre-decided engagement impact positively on gaining impressions?

Any one have any other B2B best practices for content sharing on LI?