Adobe Analytics: Use s.getTimeBetweenEvents() with lists of events to measure time between 2 events.

adobe-analytics-measure-time-between-2-events-using-getTimeBetweenEvents.js

/**
* eventsAtPurchaseStart: events to start timer
* eventsToTimeAfterPurchaseStart: events to measure duration since timer start
* eventsAtPurchaseComplete: events to stop timer
*/
var eventsAtPurchaseStart = [
  'scOpen',
  'event1',
  'event2',
  'event3',
];
var eventsToTimeAfterPurchaseStart = [
  'scAdd',
  'scRemove',
  'scView',
  'scCheckout',
  'event11',
  'event12',
  'event13',
];
var eventsAtPurchaseComplete = [
  'purchase',
  'event21',
  'event22',
  'event23',
];
var timerCookieName = 's_tbe';

var timeSincePurchaseStart = s.getTimeBetweenEvents(eventsAtPurchaseStart.join(','), true, eventsToTimeAfterPurchaseStart.join(','), false, timerCookieName, 0, 's', 1);
if (timeSincePurchaseStart) {
  var eventsAtPurchaseCompleteRegExp = new RegExp('(^|,)(' + eventsAtPurchaseComplete.join('|') + ')(,|$)');
  if (eventsAtPurchaseCompleteRegExp.test(s.events)) {
    // delete the timer cookie
    s.Util.cookieWrite(timerCookieName, '', new Date(1970, 0, 1));
  }
}
/**
* end: Measure time taken between 2 events
*/