If that bloke said to you hed pass on the con cleans to you if you stay of the windows this would of suggested to me where the money comes in, he knows he wont be passing any onto you, but feels threated by you cleaning windows **** that mate your in a good month now to really get going, this time last year I started, its tough to start but once through the 1st 12 months it gets easier, recomendations, calls from leaflets i dropped 8 months ago, you wont look back mate and in a years time youll be saying the same as me to a newbie. Just let him know you wont intentionally take any of his work. Good luck mate.
Chris