What lake connects Lake Erie and Lake Huron besides Detroit and St Clair?

The lake that connects Lake Erie and Lake Huron, besides the Detroit River and Lake St. Clair, is Lake Huron itself. Specifically, water flows from Lake Erie into the Detroit River, which then leads to Lake St. Clair and subsequently into the Saint Clair River. The Saint Clair River ultimately connects to Lake Huron, facilitating the movement between these two Great Lakes.