HistMatch_GetOverlap.js

// Get footprint of the landsat scenes
var master_fp = master.geometry();
var slave_fp = slave.geometry();

// Perform intersection to extarct overlap area
var overlap = master_fp.intersection(slave_fp);

// Add all the three layers to the map
Map.addLayer(master_fp, {}, 'Master Footprint');
Map.addLayer(slave_fp, {}, 'Slave Footprint');
Map.addLayer(overlap, {}, 'Footprint Intersection');