I have one chimney with 2 tile flues, woodstove on one, oil fired steam boiler on the other. the tiles are side by side, no bricks between them. If the tiles break and the woodstove and oil burner emissions mingle, will this create water to run down the inside of the woodstove flue into the cleanout and all over everywhere. This started some time ago and we can find nothing wrong with the chimney, flashing, etc. Before I hire some one to come with a chimney camera and pay out $$$ I wondered if anyone had an opinion on this. Thanks for any help.