A brand is running an in-stream video ad that includes a 300x250 display banner appearing next to the player. In the final report, the specialist notices the video has 50,000 starts, but the display banner only has 30,000 recorded impressions. Which specific metric should the specialist analyze to confirm how many times that specific display banner was rendered?

The companion-specific view metric counts renders of companion creatives served alongside an in-stream video ad. A video start does not guarantee that the companion banner was also rendered by the player or publisher environment. Comparing this metric with video starts identifies whether the banner delivered at the same rate as the primary video asset. The difference can reflect player behavior, available companion slots, or publisher implementation.