Graphical modeler: extract by expression on multiple sources

Question

I'm trying to make a model in QGIS, which do the following steps:

1. Use the input multiple input, so I can select different vector layers (sometimes one, sometimes much more).
2. Use the algorithm extract by expression, using the following expression QGIS: Select features visible in map extent
3. Use the algorithm package layerto save the result into a geopackage.

My problem is that I can't link the extract by expression with the input multiple input.