Please read the following table in Markdown format and then answer the question according to the table. Table cells in one row are seperated by '|', and different rows are seperated by '
'.

Table:
| Week | Date | Opponent | Result | Game site | Record | Attendance |
| --- | --- | --- | --- | --- | --- | --- |
| 1.0 | September 12, 1964 | at New York Jets | L 6–30 | Shea Stadium | 0–1 | 45665.0 |
| 2.0 | September 20, 1964 | at Buffalo Bills | L 13–30 | War Memorial Stadium | 0–2 | 28501.0 |
| 3.0 | September 27, 1964 | Houston Oilers | L 17–38 | Bears Stadium | 0–3 | 22651.0 |
| 4.0 | October 4, 1964 | Boston Patriots | L 10–39 | Bears Stadium | 0–4 | 15485.0 |
| 5.0 | October 11, 1964 | Kansas City Chiefs | W 33–27 | Bears Stadium | 1–4 | 16285.0 |
| 6.0 | October 18, 1964 | at San Diego Chargers | L 14–42 | Balboa Stadium | 1–5 | 23332.0 |
| 7.0 | October 25, 1964 | at Oakland Raiders | L 7–40 | Frank Youell Field | 1–6 | 17858.0 |
| 8.0 | November 1, 1964 | at Kansas City Chiefs | L 39–49 | Municipal Stadium | 1–7 | 15053.0 |
| 9.0 | November 8, 1964 | San Diego Chargers | L 20–31 | Bears Stadium | 1–8 | 19670.0 |
| 10.0 | November 15, 1964 | New York Jets | W 20–16 | Bears Stadium | 2–8 | 11309.0 |
| 11.0 | November 20, 1964 | at Boston Patriots | L 7–12 | Fenway Park | 2–9 | 24979.0 |
| 12.0 | November 29, 1964 | Oakland Raiders | T 20–20 | Bears Stadium | 2–9–1 | 15958.0 |
| 14.0 | December 13, 1964 | Buffalo Bills | L 19–30 | Bears Stadium | 2–10–1 | 14431.0 |
| 15.0 | December 20, 1964 | at Houston Oilers | L 15–34 | Jeppesen Stadium | 2–11–1 | 15839.0 |
Question:
What is the highest Week with the Opponent Buffalo Bills?
Answer:
14.0