I had a question on this caulking done on the outer part of the exterior door threshold. I have marked with the white arrow what looks like where the extension connects (seems to create a large gap that I am concerned water will form and leak from?) and a red arrow where the caulking is done. I'm curious if this will cause an issue with water.
I was also wondering if this part of the door frame should be caulked as well. highlighted in white on the photo: