The Polish national team is going through a period of generational change. The team has a good combination of experience and youth, as well as good physical strength. Despite the physical power, Poland is not an enduring and fast team, and it causes problems against active and fast teams.
Croatia is probably the most aging team in Europe. Here the change of generations is as hard as possible. In the Nations League they defeated Scotland and Poland and lost only to the obvious favorite of the group Portugal. It is unlikely that they will be able to fight for the first line, but they are not in danger of relegation from the League A.
Both teams are good in attack, rarely leaving the field without scoring, but they are too vulnerable in defense, often conceding completely unnecessary goals. Croatia have scored in eight of their last nine matches. Poland will be able to score at least one goal at home with Lewandowski in the team.