Meta is asking about statements TikTok made in its lawsuit against the US ban of its app to show that when TikTok is unavailable, users often turn to Instagram — showing that users consider it to be a substitute in at least some respect. TikTok told the court in its own case that even a temporary shutdown could cause it to permanently cede ground to competitors like Instagram, YouTube and Snapchat. Earlier in the Meta trial, the company showed that TikTok’s temporary shutdown led to a spike in engagement for Instagram.