Newton's Third Law - Two Blocks Tied Together

When two blocks are tied together and pulled across the floor, how do the different forces compare?

[vzelat]

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[jeanclaudediscaya]

What if the force was pulling up at an angle of 60°? With kinetic friction as well. How would this affect the normal force for the blocks, assuming each block has different weights and acceleration on both blocks happens only in the horizontal?