Hi, you will need to obtain a reducing strip (teardrop profile) to provide a step-down of the differing heights between the Laminate and lino at the door threshold. The type and height of this will depend on the depth of the finished laminate (depending on the type of underlay used under the Laminate).
Check the height of the finished Laminate floor and the width of door (between inner cheeks of frame) then take this to a flooring store or large DIY store where they will have a variety of reducing strips.
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