The timeline is always in chronological order and clutter-free.
You can see if there are replies, but it will be displayed as 0, 1, or 1+. You can tell if you've liked or boosted (retweeted), but that's about it. The number is not known until the details are displayed. It is carefully designed so as not to incite competition or be misled by the volume of voices (number of supporters and virality).