2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/47890I will attempt to survey some selected physics issues on QCD interconnection phenomena in the processes $e^+e^-\to W^+W^-\to$ 4 jets and $e^+e^-\to t\bar t \to b W^+\bar b W^-$. Possible consequences for LEP2 and future linear $e^+e^-$ colliders are briefly discussed.15 pages, LatexHigh Energy Physics - PhenomenologyInterconnection phenomena in $W^+W^-$ and $t\bar t$ eventstext