I don't know if those are the right numbers that you need to send to the second keyboard, but I can say that the app is sending the messages that you entered into it -- so the app is working correctly.
If you had a MIDI interface to connect to the second keyboard directly, you could more easily confirm those are the right messages. Alternatively, you could see if the second keyboard has some kind of flashing icon or other indicator that it is at least receiving any MIDI.
Assuming the messages are correct and the second keyboard isn't receiving them, then your focus should finding what settings you need on the first keyboard to pass the messages through from the MIDI Thru port. Contacting Kronos or a Kronos user forum should help.
As a last resort, you could get a MIDI interface with two output ports, or a MIDI splitter, so the iPad can communicate with each keyboard directly rather than passing through them in a series. This would have the added advantage of using the second keyboard without the first keyboard if you ever wanted to.
Some MIDI interface recommendations are listed here:
http://www.arlomedia.com/apps/setlistmaker/support/hardware.html