Driving ADL5350 from ADF4360-7

The ADL5350 needs about 4dBm LO drive. In my case the LO is around 1700 MHz. Do I need a balun and a LO buffer to use the ADF4360-7 as the LO source? Or perhaps some smart trick allows me to connect it differently as LO harmonics is not important as the mixer is already square wave? My goal would be to save the power used by a LO buffer.