Arduino 9-axis motion shield incompatible with 3.5" TFT shield?

So I am trying to use the Arduino 9-axis with a 3.5" LCD shield which is based on ILI9486 driver chip. The display does not work when motion shield in the mix. Touchscreen on display works, but not the display, which used A2 for LCD_RS signal and A3 for LCD_CS signal. I have nothing connected to IN2 and IN3 connectors on motion shield, so not sure why it is creating a conflict. Thanks for any help.