  We study the timelike geodesic congruences in the generalized Ellis-Bronnikov
spacetime (4D-GEB) and in recently proposed 5D model where a 4D-GEB is embedded
in a warped geometry (5D-WGEB) and conduct a comparative study. Analytical
expressions of ESR variables (for 4D geometries) are found which reveal the
role of the wormhole parameter. In more general 4D and 5D scenarios geodesic
equation, geodesic deviation equation and Raychaudhury equations are solved
numerically. The evolution of cross-sectional area of the congruences of
timelike geodesics (orthogonal to the geodesic flow lines) projected on
2D-surfaces yield an interesting perspective and shows the effects of the
wormhole parameter and growing/decaying warp factors. Presence of warping
factor triggers rotation or accretion even in the absence of initial congruence
rotation. Presence of rotation in the congruence is also found to be playing a
crucial role which we discuss in detail.
