  In the recent years there has been a resurgence of the study of Extended
Solar Cycles (ESCs) through observational proxies mainly in Extreme
Ultraviolet. But most of them are limited only to space-based era covering only
about two solar cycles. Long-term historical data-sets are worth in examining
the consistency of ESCs. Kodaikanal Solar Observatory (KSO) and Mount Wilson
Observatory (MWO) are the two major sources of long-term Ca II K digitised
spectroheliograms covering the temporal spans 1907-2007 and 1915-1985
respectively. In this study, we detected supergranule boundaries, commonly
known as networks, using the Carrington maps from both KSO and MWO datasets.
Subsequently we excluded the plage areas to consider only quiet sun (QS) and
detected small scale bright features through intensity thresholding over the QS
network. Latitudinal density of those features, which we named as `Network
Bright Elements' (NBEs), could clearly depict the existence of overlapping
cycles with equator-ward branches starting at latitude $\approx 55^{\circ}$ and
taking about $15\pm1$ years to reach the equator. We performed superposed epoch
analysis to depict the similarity of those extended cycles. Knowledge of such
equator-ward band interaction, for several cycles, may provide critical
constraints on solar dynamo models.
