Description of problem:
My tests capture traffic on two different interfaces from a VM and then merge the resulting captures with tcpslice when they are not empty.
Sometimes, the tcpslice command fails like this:
[root@cmp-3-0 ~]# tcpslice -v -w /tmp/kk /tmp/tmp.tozOLM0ErS /tmp/tmp.k62LTkDd4k
tcpslice: problems finding end packet of file /tmp/tmp.k62LTkDd4k

This is how this capture files were obtained:
$ tcpdump -s0 -Uni enp2s0 src host 2001:db8::f816:3eff:fe6a:1fe6 and dst host f00d:f00d:f00d:4::1 and tcp src port 22 -w /tmp/tmp.tozOLM0ErS &
$ tcpdump -s0 -Uni enp3s0 src host 2001:db8::f816:3eff:fe6a:1fe6 and dst host f00d:f00d:f00d:4::1 and tcp src port 22 -w /tmp/tmp.k62LTkDd4k &

I can open both files with "tcpdump -r" on the RHEL9.2 VM where they were obtained, so I don't know what is the problem with tmp.k62LTkDd4k .

I have tried in my laptop (Fedora 37 - tcpdump-4.99.4-2.fc37.x86_64) and I got the same tcpslice failure. However, mergecap worked well:
$ mergecap -w merged tmp.k62LTkDd4k tmp.tozOLM0ErS

I will attach the previous files to this BZ.

Version-Release number of selected component (if applicable):
RHEL 9.2 - tcpdump-4.99.0-6.el9.x86_64

How reproducible:
This tests are re-executed often by our jobs and they fail due to this issue sometimes... I'd say 5% times (rough estimation)

Steps to Reproduce:
See previous description

Actual results:
tcpsile fails

Expected results:
tcpsile should not fail