be on the same wavelength/on different wavelengths

be on the same wavelength

To be in agreement; to think or behave similarly. I was surprised that we became friends so quickly, but we're just always on the same wavelength.
See also: on, same, wavelength
Farlex Dictionary of Idioms.

be on the same ˈwavelength/on different ˈwavelengths

(informal) have the same/different opinion or feelings about something: I find him difficult to talk to — we’re on completely different wavelengths. On the subject of marriage, Judith and I are on the same wavelength.
See also: different, on, same, wavelength
Farlex Partner Idioms Dictionary
See also:
  • be on the same wavelength
  • wavelength
  • bang (people's) heads together
  • bang people's heads together
  • bang your/their/our heads together
  • do unto others
  • act out
  • live (one's) own life
  • live your own life