Are there testimonies of passing the "complete oral tradition"?

Question

The unbroken passage of the Oral Torah as a whole is the foundation stone of Rabbinic Judaism.

Of course, there are many mentions of rabbis learning from other rabbis, for example, the beginning of Avos - succeeding couples "received" from previous ones.

I am looking for any written testimonies (not speculations) by leading Tanakhic characters: judges, kings, elders, or later rabbis and sages of receiving "the oral Torah" in whole from their teacher.

Do any of the Rishonim or Achromin ever testify that?

Answer 1

The Gemara Sukkah 28A mentions about R' Yochanon Ben Zakai that he never said over anything that he did not hear from his teachers;

אָמְרוּ עָלָיו עַל רַבָּן יוֹחָנָן בֶּן זַכַּאי: מִיָּמָיו לֹא שָׂח שִׂיחַת חוּלִּין, וְלֹא הָלַךְ אַרְבַּע אַמּוֹת בְּלָא תּוֹרָה וּבְלֹא תְּפִילִּין, וְלֹא קְדָמוֹ אָדָם בְּבֵית הַמִּדְרָשׁ, וְלֹא יָשַׁן בְּבֵית הַמִּדְרָשׁ לֹא שֵׁינַת קֶבַע וְלֹא שֵׁינַת עֲרַאי, וְלֹא הִרְהֵר בִּמְבוֹאוֹת הַמְטוּנָּפוֹת, וְלֹא הִנִּיחַ אָדָם בְּבֵית הַמִּדְרָשׁ וְיָצָא, וְלֹא מְצָאוֹ אָדָם יוֹשֵׁב וְדוֹמֵם אֶלָּא יוֹשֵׁב וְשׁוֹנֶה, וְלֹא פָּתַח אָדָם דֶּלֶת לְתַלְמִידָיו, אֶלָּא הוּא בְּעַצְמוֹ, וְלֹא אָמַר דָּבָר שֶׁלֹּא שָׁמַע מִפִּי רַבּוֹ מֵעוֹלָם,

A little further on, the Gemara lists all the things he learned;

אָמְרוּ עָלָיו עַל רַבָּן יוֹחָנָן בֶּן זַכַּאי שֶׁלֹּא הִנִּיחַ מִקְרָא וּמִשְׁנָה, גְּמָרָא הֲלָכוֹת וְאַגָּדוֹת; דִּקְדּוּקֵי תוֹרָה וְדִקְִדּוּקֵי סוֹפְרִים; קַלִּים וַחֲמוּרִים וּגְזֵרוֹת שָׁווֹת; תְּקוּפוֹת וְגִימַטְרִיָּאוֹת; שִׂיחַת מַלְאֲכֵי הַשָּׁרֵת וְשִׂיחַת שֵׁדִים וְשִׂיחַת דְּקָלִים; מִשְׁלוֹת כּוֹבְסִין, מִשְׁלוֹת שׁוּעָלִים; דָּבָר גָּדוֹל וְדָבָר קָטָן. זדָּבָר גָּדוֹל — מַעֲשֵׂה מֶרְכָּבָה. דָּבָר קָטָן — הֲוָיוֹת דְּאַבָּיֵי וְרָבָא.

So here is one Tanna that learned the entire Oral Torah from his teachers.

As noted in the comments, even though it does not explicitly say that he learned it all from his Rebbe, it is inferred from the fact that the Gemara would have no other way of knowing that he knew everything unless he actually said it over to people, since he never said anything that he did not hear from his Reebeim he must of learned all of it from them as well.