HOra software Graha yudha and Combustion

[sunny29031]

Respected learned ,

I have been using the Jagannatha Hora Software for the last 1-2 months ,....and hav a doubt ie ,

in case of my friend -- November 2 1991
2-31 am
Mancherial ( hyderabad area )

here .... when we right click on the planet degrees info space...and select combustion ...it says ...no planet combusted ....
and selecting planetary war ,....says sun loses venus wins


Both sun and venus in same nakshatra ....

Pls throw light on this ...as y is this considered yudha not combustion ?
thanks