Telco A/B tests we've caught

Safari (visits 1, 5) shows a different page layout compared to Chrome/Firefox/Edge (visits 2, 3, 4): in Safari, the 'Videos related to cost of business phone' section appears between 'Case Studies' and 'Questions', and the video thumbnails show different content titles. In Chrome/Firefox/Edge, the Videos section appears after the Questions section, and video thumbnails show different titles. Additionally, the VoIP Phone Service blurb copy differs slightly between Safari and Chrome/Firefox/Edge visits.

The popup/modal shown on page load differs between visits: Safari (visit 1) shows '$15 OFF 3-MONTH PLANS – WITH OUR NEW CUSTOMER OFFER' while Chrome (visit 2) shows '$25 RENEWAL CREDIT WHEN YOU BRING YOUR NUMBER FROM VERIZON OR AT&T'. Firefox (visit 3) also shows the '$15 OFF' variant matching Safari. Since two different browser engines (Safari and Firefox) show the same '$15 OFF' offer while Chrome shows '$25 RENEWAL CREDIT', and Optimizely variation_map keys diverge between visits, this is a real A/B test on the promotional popup offer.