6 hours ago someone was asking the same thing:
So I recommend you before ask, check the official help site (Qlik | Help) then check the community.
Thanks for your reply. i have already gone through the link on official help site. but it is confusing since it never mentions any thing about 2nd connection.
once it is using app name for chart and once connection name for table.
i am looking for something with screenshots or video for better understanding.