Kane and Tuchel appear in an official documentary called "Building Dreams", which tells the story of England's qualification for the World Cup.
Kane said: "In the early days of Southgate's coaching, we spent a lot of time discussing how to unite better and how to put club football aside when coming here to represent England. This momentum has grown year by year, but now, of course, everyone's expectation is to win the game and win."
In the documentary, Tuchel can be seen explaining to the players in the first team meeting that talent alone is not enough for them to win the championship, and only their "brotherhood" and team harmony can make them go further than they did under Southgate's coaching.
"Our mission, the reason we are here, is very, very clear. We want to be world champions and add a second star to our jersey. For me, the most important thing is that we talk about this, talk about it directly, our mission, the goal of this mission is clear: add a second star to the jersey."
"This is not enough, because it's not just about football, it's not just about offensive organization and defensive formations, it's not just about set pieces. Set pieces are very important, but in international football, especially in international football, it's not just about football."
"I talked to a World Cup winner who participated in two World Cups. He said the difference between the quarter-finals and the final... is the same level, the same quality of play."
"But when they come here like brothers, we are ready to sacrifice our lives for each other. If the summer camp is two months, that's fine, so two months, okay? Brothers, let's do something special."