What is the difference between below the line advertising and brand promotion marketing?

https://www.answers.com/Q/What-is-the-difference-between-below-the-line-advertising-and-brand-promotion-marketing

Below the line advertising is a specific type of targeted promotion that focuses on direct customer engagement. Brand promotion marketing is a broader concept that may include BTL campaigns, outdoor advertising, digital marketing, social media promotions, retail activities and influencer collaborations.