Panasonic GH4 HDMI Timings

During my last event video streaming test I ran again into this problem.  I have Panasonic GH4 recording at 4K 23.98fps, GH3 and Canon HF G10 recording at 1080p 23.98fps.  Their HDMI output timings differ though.  GH3 and G10 produce 1080i 59.94.  GH3 output is 1080p 23.98.

So I asked myself what would it take for GH4 to produce 1080i 59.94 signal on its HDMI output.
The answer is anything but obvious - use AVCHD container and shoot in 60i.  Here is the sheet I found on the internet:


Hope this helps!