Watch the Chord Rate and Placement of Melody online guitar lesson by Matthieu Brandt from Songwriting on Guitar
A number of elements can influence the feel / perceived speed a song section has. The placement of the melody can make changes in chord rate change more apparent or it can obscure it. Often the rhythmic character of chord changes are underlined by using the same rhythm in the melody. Use of syncopation and anticipation will be similar in harmony and melody. But they don't have to. The chord rate changes will vary depending on the tempo of the song.