737NG's V2 + 20
During the takeoff roll or initial climb, should a 737NG's command airspeed bug vary from the MCP set speed (V2) in any way. A screenshot from a new 737 desktop flight simulator shows the CAB at V2 + 20 during the takeoff roll. Is this correct? This seems to be quite different from other Boeings where the MCP airspeed window speed always matches the CAB on the PFD ASI.
I understand that the F/D target airspeed will be V2 + 20 after takeoff, but the bug also???
Thanks.
Regards.
Q.