Can you guys please let me know how come 0 Visit can generate so many unique visitors

0 Visits and pageviews is possible

Please overview this points:

Visit 1:

·         Visitor enters to Page A

·         Visitor navigates to Page B

·         Visitor navigates back to Page A

·         End of session

Visit 2:

·         Visitor enters to Page C

·         Visitor navigates to Page B

·         End of session

Summary

·         Page A: 2 Pageviews, 1 Visit, 1 Unique Pageview, 1 Unique Visitor, 1 Entrance

·         Page B: 2 Pageviews, 0 Visits, 2 Unique Pageviews, 2 Unique Visitors, 0 Entrances

·         Page C: 1 Pageview, 1 Visit, 1 Unique Pageview, 1 Unique Visitor, 1 Entrance

·         Totals: 5 Pageviews, 2 Visits, 4 Unique Pageviews, 2 Unique Visitors, 2 Entrances